T-6B Engine Malfunctions In-Flight Created: 16 Feb 2016 Updated: 18 Feb 2016 T6BDriver.com

Objectives Be able to properly identify in-flight engine malfunctions to include: Engine Failure Uncommanded Propeller Feather Uncommanded Power Change/Loss of Power Be able to quickly apply corrective actions for the identified malfunction Comprehend the purpose of the corrective actions applied (Utilize engine malfunction in-flight diagram while reviewing this slideshow)

Initial Setup This briefing is a technique Provides a quick, reliable way to identify the different engine malfunctions Gets rid of time occupiers (Bad indicators / EICAS lights) Goes straight to problem (Know where to focus) Practice these on C2201 event Briefing assumes the first step of any EP (maintain aircraft control) has been completed

Point of Origin Something wrong with engine but unsure of exact problem Noise/Lack of noise Deceleration Vibrations Np Q Oil P ITT Oil T Engine Problem N1 Hyd

Analyze the Situation Something wrong with engine but unsure of exact problem Noise/Lack of noise Deceleration Vibrations First place to go is N1/ITT Indicate core health of engine Many EICAS distractions N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Something wrong with engine but unsure of exact problem Noise/Lack of noise Deceleration Vibrations First place to go is N1/ITT Indicate core health of engine Many EICAS distractions 2 Possible Scenarios N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Something wrong with engine but unsure of exact problem Noise/Lack of noise Deceleration Vibrations First place to go is N1/ITT Indicate core health of engine Many EICAS distractions 2 Possible Scenarios N1/ITT are OK (talk about later) N1/ITT are dropping N1 ITT N1 ↓ ITT ↓ N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (N1/ITT Dropping) What exactly do you look for? N1 ↓ ITT ↓ N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (N1/ITT Dropping) What exactly do you look for? N1/ITT N1 going below 60% ITT going below 500° Engine has dropped below ground Idle conditions N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (N1/ITT Dropping) What exactly do you look for? N1/ITT N1 going below 60% ITT going below 500° Engine has dropped below Idle conditions Engine Failure Engine Failure!!! N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (N1/ITT Dropping) What exactly do you look for? N1/ITT N1 going below 60% ITT going below 500° Engine has dropped below Idle conditions NATOPS (Engine Failure) N1 will indicate 0% within approx. 5 seconds N1 indicator will not indicate speeds below 8% Lots of EICAS lights Prop RPM will be slow or stop Does not mean engine has frozen/seized Engine Failure Engine Failure!!! Watch Video N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Engine Failure) Execute Engine Failure Critical Action Items Zoom Glide – 125 KIAS Zoom ability is very airspeed dependent NATOPS (>150 KIAS): 2 G pull to a 20° climb to 145 KIAS then 0.5 G push-over Exchange airspeed for altitude while turning for airfield (10° nose high) “Turn, Climb, Clean” Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject The more aggressive the maneuver the more attention must be paid N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Engine Failure) Execute Engine Failure Critical Action Items Zoom Glide – 125 KIAS Zoom ability is very airspeed dependent NATOPS (>150 KIAS): 2 G pull to a 20° climb to 145 KIAS then 0.5 G push-over Exchange airspeed for altitude while turning for airfield (10° nose high) “Turn, Climb, Clean” PCL – Off Get prop to feather position Save energy in zoom Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject NATOPS calls this step critical N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Engine Failure) Execute Engine Failure Critical Action Items Zoom Glide – 125 KIAS Zoom ability is very airspeed dependent NATOPS (>150 KIAS): 2 G pull to a 20° climb to 145 KIAS then 0.5 G push-over Exchange airspeed for altitude while turning for airfield (10° nose high) “Turn, Climb, Clean” PCL – Off Get prop to feather position Save energy in zoom Intercept ELP Figure the nearest airfield (should be turning to by now) Use ½ DME method to figure the required altitude to make airfield (DEGA) ½ DME to airfield + 3,000’ + Elevation Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Engine Failure) Execute Engine Failure Critical Action Items Zoom Glide – 125 KIAS Zoom ability is very airspeed dependent NATOPS (>150 KIAS): 2 G pull to a 20° climb to 145 KIAS then 0.5 G push-over Exchange airspeed for altitude while turning for airfield (10° nose high) “Turn, Climb, Clean” PCL – Off Get prop to feather position Save energy in zoom Intercept ELP Figure the nearest airfield (should be turning to by now) Use ½ DME method to figure the required altitude to make airfield (DEGA) ½ DME to airfield + 3,000’ + Elevation Airstart – Attempt if warranted (When is that???) 4-Fs (Fire/FOD/Frozen/Fail) Frozen or Seized – Look at hydraulic pressure (immediate drop to zero = frozen) Also consider time & altitude (if right on profile altitude) Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject Fire/FOD = Mechanical failures in book PMU fail? Have to do a PMU off airstart…more laborious and time consuming Warning about restrart consideration if right on profile altitude 2,000’ controlled ejection N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Immediate Airstart Critical Action Items PCL – Off Should already be in the Off position Don’t mistake Idle for Off Immediate Airstart 3-Fs (Fire/FOD/Frozen) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Immediate Airstart Critical Action Items PCL – Off Should already be in the Off position Don’t mistake Idle for Off Starter Switch – Auto/Reset Have to exchange hands on control stick Immediately after this step, switch right hand back to stick for next step Immediate Airstart 3-Fs (Fire/FOD/Frozen) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Immediate Airstart Critical Action Items PCL – Off Should already be in the Off position Don’t mistake Idle for Off Starter Switch – Auto/Reset Have to exchange hands on control stick Immediately after this step, switch right hand back to stick for next step PCL – Idle above 13% N1 Move “2 clicks” to Idle position Do not exaggerate this step and push PCL way above Idle Immediate Airstart 3-Fs (Fire/FOD/Frozen) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Immediate Airstart Critical Action Items PCL – Off Should already be in the Off position Don’t mistake Idle for Off Starter Switch – Auto/Reset Have to exchange hands on control stick Immediately after this step, switch right hand back to stick for next step PCL – Idle above 13% N1 Move “2 clicks” to Idle position Do not exaggerate this step and push PCL way above Idle Engine Instruments – Monitor ITT, N1, & Oil Pressure Look for light off on ITT Monitor for over temp Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute NATOPS Airstarts have only been demonstrated at 20,000’ MSL and below Airspeed 125-200 KIAS < 15,000’ Airspeed 135-200 KIAS at 15,001 – 20,000’ Useful power available 40 seconds from starter engagement Lose 1,200’ of altitude during an airstart Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute NATOPS Airstarts have only been demonstrated at 20,000’ MSL and below Airspeed 125-200 KIAS < 15,000’ Airspeed 135-200 KIAS at 15,001 – 20,000’ Useful power available 40 seconds from starter engagement Lose 1,200’ of altitude during an airstart Finishing Critical Action Items (if start unsuccessful) PCL – Off Firewall Shutoff Handle – Pull Execute Forced Landing or Eject Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Immediate Airstart) 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute NATOPS Airstarts have only been demonstrated at 20,000’ MSL and below Airspeed 125-200 KIAS < 15,000’ Airspeed 135-200 KIAS at 15,001 – 20,000’ Useful power available 40 seconds from starter engagement Lose 1,200’ of altitude during an airstart Finishing Critical Action Items (if start unsuccessful) PCL – Off Firewall Shutoff Handle – Pull Execute Forced Landing or Eject Finishing Critical Action Items (if start successful) PCL – As required after N1 reaches Idle RPM (approx. 67% N1) PEL - Execute Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Engine Failure Summary 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Unknown Engine Problem Look at N1/ITT N1/ITT Dropping below 60%/500° = Engine Failure! Accomplish Engine Failure Critical Action Items When get to Airstart step Decide if warranted 4-Fs/Time/Altitude Accomplish Immediate Airstart Critical Action Items Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Go back to beginning N1 ITT #2 #1 Engine Problem 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to beginning Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Go back to beginning 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to beginning Look at N1/ITT and indications are good Core of engine is running fine Problem is with power take-off from the engine (thrust) Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Go back to beginning 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to beginning Look at N1/ITT and indications are good Core of engine is running fine Problem is with power take-off from the engine (thrust) Look at Q/Np Tells how engine power is being used for thrust Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation Go back to beginning 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to beginning Look at N1/ITT and indications are good Core of engine is running fine Problem is with power take-off from the engine (thrust) Look at Q/Np Tells how engine power is being used for thrust 2 Possible Scenarios Np ↓/Q ↑ Np OK/Q ↓ Both use the same Critical Action Items but for different reasons Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np OK/Q ↓) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute If Np is OK & Q drops, what has happened? UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject Show Video N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np OK/Q ↓) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute If Np is OK & Q drops, what has happened? Uncommanded Power Change/Loss of Power! UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject Show Video N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np OK/Q ↓) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute If Np is OK & Q drops, what has happened? Uncommanded Power Change/Loss of Power! 2 Possible causes: PMU has rolled back engine (digital signal to FMU) FMU has a problem scheduling UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject Show Video N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Uncommanded Power Change/Loss of Power) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncomm Pwr Change/Loss of Pwr Critical Action Items PCL – Midrange Positioning for a step-change during next step UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Uncommanded Power Change/Loss of Power) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncomm Pwr Change/Loss of Pwr Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes digital signal from PMU to FMU Could be faulty signals to the PMU Could be faulty signals from the PMU PCL now controlling FMU via flexible cable UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Uncommanded Power Change/Loss of Power) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncomm Pwr Change/Loss of Pwr Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes digital signal from PMU to FMU Could be faulty signals to the PMU Could be faulty signals from the PMU PCL now controlling FMU via flexible cable Prop Sys CB….no reason to go here as Np was fine (not a feather issue) UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Uncommanded Power Change/Loss of Power) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncomm Pwr Change/Loss of Pwr Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes digital signal from PMU to FMU Could be faulty signals to the PMU Could be faulty signals from the PMU PCL now controlling FMU via flexible cable Prop Sys CB….no reason to go here as Np was fine (not a feather issue) PCL – As required If power is restored (Q climbing back) then check range and move to step 5 If no power comes back/not responsive…move PCL to manipulate FMU? UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Uncommanded Power Change/Loss of Power) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncomm Pwr Change/Loss of Pwr Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes digital signal from PMU to FMU Could be faulty signals to the PMU Could be faulty signals from the PMU PCL now controlling FMU via flexible cable Prop Sys CB….no reason to go here as Np was fine (not a feather issue) PCL – As required If power is restored (Q climbing back) then check range and move to step 5 If no power comes back/not responsive…move PCL to manipulate FMU? PEL – Execute If some power came back, need to cycle PCL to see how much & what descent rate Compare to 1,350-1,500 FPM to decide if need to shut down (if power is insufficient) If decide to shut down engine…continue with steps 6-9 UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Uncommanded Power Change/Loss of Power Summary 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Unknown Engine Problem Look at N1/ITT – N1/ITT are OK Look at Q/Np – Q is dropping/Np is OK Identified Uncommanded Power Change/Loss of Power Execute Critical Action Items UnComm Power Chg/ Loss of Pwr Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to the point of checking Q/Np UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject PIU modulates oil flow & pressure to prop pitch control mechanism via transfer sleeve N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to the point of checking Q/Np If Np drops & Q rises, what has happened? UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject PIU modulates oil flow & pressure to prop pitch control mechanism via transfer sleeve N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Go back to the point of checking Q/Np If Np drops & Q rises, what has happened? Uncommanded Propeller Feather! UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject Watch video N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Possible causes: PMU malfunction PIU malfunction Prop-sleeve touchdown cuts off oil to prop Some mechanical issue with pitch control mechanism Feather Dump Solenoid Valve (controlled by PCL) has opened Prop Servo Valve (controlled by PMU) has opened UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject PIU modulates oil flow & pressure to prop pitch control mechanism via transfer sleeve N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Analyze the Situation (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Possible causes: PMU malfunction PIU malfunction Prop-sleeve touchdown cuts off oil to prop Some mechanical issue with pitch control mechanism Feather Dump Solenoid Valve (controlled by PCL) has opened Prop Servo Valve (controlled by PMU) has opened The critical action items attempts to remedy most of these! UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject PIU modulates oil flow & pressure to prop pitch control mechanism via transfer sleeve N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncommanded Prop Feather Critical Action Items PCL – Midrange Positioning for a step-change during next step UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncommanded Prop Feather Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes PMU control to PIU (more oil) Possible faulty signal from PMU to open Prop Servo Valve UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncommanded Prop Feather Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes PMU control to PIU (more oil) Possible faulty signal from PMU to open Prop Servo Valve Prop Sys CB – Pull if NP stable below 40% UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Take Corrective Action (Np ↓/Q ↑) 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Execute Uncommanded Prop Feather Critical Action Items PCL – Midrange Positioning for a step-change during next step PMU Switch – Off Removes PMU control to PIU (more oil) Possible faulty signal from PMU to open Prop Servo Valve Prop Sys CB – Pull if NP stable below 40% PCL – As required If prop unfeathers (Q decreasing/Np increasing), check PCL range and descent rate If enough power, execute step 5 If not enough power, jump to step 6 UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

Uncommanded Prop Feather Summary 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Unknown Engine Problem Look at N1/ITT – N1/ITT are OK Look at Q/Np – Np is dropping/Q is rising Identified Uncommanded Prop Feather Execute Critical Action Items UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd

UnComm Power Chg/ Loss of Pwr Conclusion 1. PCL – Mid Range 2. PMU Switch – Off 3. Prop Sys CB – Pull if Np stable below 40% 4. PCL – As req 5. PEL – Execute 6. Prop Sys CB – Reset, as req 7. PCL – Off 8. Firewall Shutoff Handle – Pull 9. Execute Forced Landing or Eject 1. PCL – Off 2. Starter Switch – Auto/Reset 3. PCL – Idle, Above 13% N1 4. Eng Inst – Monitor ITT, N1 & Oil P 5. PCL – Off 6. Firewall Shutoff Handle – Pull 7. Execute Forced Landing or Eject 8. PCL – As req after N1 Idle RPM (67%) 9. PEL – Execute Identified three main in-flight engine malfunctions and how to recognize each one Elicited a method for quick identification of malfunction Expanded on each Critical Action Item step for clear comprehension of actions UnComm Prop Feather UnComm Power Chg/ Loss of Pwr Np ↓ Q ↑ Np (>40%) Q ↓ Immediate Airstart 4-Fs (Fire/FOD/Frozen/Fail) Other: Alt or Time Q Np Engine Failure 1. Zoom Glide – 125 KIAS 2. PCL – OFF 3. Intercept ELP 4. Airstart – Attempt if Warranted 5. Firewall Shutoff Handle – Pull 6. Execute Forced Landing or Eject N1 ITT N1 ↓ (< 60%) ITT ↓ (< 500°) (Below Idle) N1 ITT #2 Np Q Oil P ITT Oil T #1 Engine Problem N1 Hyd