Pilot Exterior Preflight LT “Rick James” Holt Preflight

Standard stuff… Check for leaks, open panels and general condition as you approach the plane.

HF 1 SRS Upper Tacan Tank 5 Drain Mast Dump Chute Vortex Generator ASCL 2 ASCL 1

Left Wing Beaver Tail

Beaver Tail – Venting system designed to create a cooling boundary between engine nacelle and fuel tank

Flap Position (Degrees) Left Wing Fuel Dump Chute Flap Position (Degrees)

Left Wing Vortex Generator

FLAP SKID PAD Rubbing allowed FLAP TRACK

7 Static Wicks “any one off edges, or any two- down”

Boost Pump Press Switch APU Filter Boost Pump APU Fuel Inlet Line #2 Aileron Trim Cables Boost Pump Press Switch APU Filter Boost Pump APU Fuel Inlet Line #2 Aileron Push-Pull rod APU Filter Drain + man shut-off APU Fuel Drain Valve

Wing Deice Hot Air discharge louvers Scored Surface to prevent cracking Blade Angle Reference mark

Purpose: structural mounting of wing Centroid Riser Purpose: structural mounting of wing Jack Point Engine Breather Purpose: escaping air/pressurize oil tank

Landing Gear Emergency Extension Cable Flap Jackscrew Fuel Dump Chute Fuel Dump Valve (MDC) Aileron Push-Pull Rod Primary and Secondary Popet Lines Transfer Pump

Flap Brake actuation window (Red dot will appear in the window if brake set) Flap Brake (MDC) Flap Torque Tube Landing Light (MEAC)

Left Wing Flap Carriage Access Panels Check the roll pins for cracks

Left Wing Flap Brake Actuation Indicator Flap Actuator (Jack Screw)

Left Wing Flap Brake Check indicator

Left Wing Flap Torque Tube Dump Valve Aileron Push Pull Rod Check for scrapes where there is no roller Primary / Secondary Bleed Metering Lines

Left Wing Flap Torque Tube Tank 5 Fuel Vent Aileron Push Pull Rod

Left Wing Flap Asymmetry Chain Aileron Trim Cables

Left Wing Aileron Trim Cables MLG Manual Uplock Release Cable Wing Plenum Anti-Ice Exhaust

Left Wing APU Fuel Filter APU Fuel Filter Drain Valve APU Manual Fuel Shutoff Valve

Left Wing Hydraulic Fluid Heat Exchanger Lines Landing Gear / Brake Hydraulic Lines

Vents are covered with flame arrestors Outboard Fuel Tank Vent Inboard Fuel Tank Vent Two #5 vent lines are interconnected and plumbed into this vent

Static Discharge Wicks Left Wing Static Discharge Wicks Fuel Tank Vents

Left Wing Fuel Tank Vents

Left Wing Landing Light

Left Wing External Stores Racks (Wing Pylons)

NACA Vent intake for cooling air Left Wing NACA Vent intake for cooling air

Engine Cowl Panel Latches Nacelles EDC Dump Exhaust Door (Engines 2 & 3) check for hinge (1 &4 have no hinge) Engine Cowl Panel Latches Oil Cooler Air Scoop

Nacelles Oil Cooler / “Piccolo Tubes” Air Exit Duct look for birds nest “Gang” Drain Oil Cooler Flap

Nacelles Oil Cooler Inlet Generator Cooling Air Duct / Shutoff Valve …also used to cool eng mounts

Check for proper blade angle (should see three holes) Nacelles Island Forward Spinner Check for proper blade angle (should see three holes) Cuff Aft Spinner

Main Mount Wheel Well General Items: Chocks Grounding strap Tires

Bungee Springs – help with freefall extension in flight Counter Measures (If Installed) should see 1 pin per set of buckets Brake Fuse 30 cubic inches of fluid actuates shut off Mechanical Down Lock Linkage Lower drag strut Look For: Uneven Tread Wear Max Tread Wear: When tread pattern is worn to the bottom of the tread groove Flat Spotting: due to prolonged standing Sidewall conditions: Look for cracks, cuts, abrasions, bulges, gouges, cord plies Enough tread for bounce flight? Fire Shield Emergency Brake Line Normal Brake Lines

Main Mount Wheel Well Shuttle Valve Brake Pucks (1,2,3 rule) 1. No ONE flush 2. No 2 side by side not fluxing 3. No THREE total not fluxing with brake actuation.

Main Mount Wheel Well Emergency (Air) Hydraulic Brake Line Normal Hydraulic Brake Lines

Main Mount Wheel Well Scissor Switch (Weight On Wheels) Brake Fuses check the arrow going down toward the deck Automatic Safety Downlock Linkage (Mechanical Downlock)

MLG Door Actuating Cylinder Main Mount Wheel Well MLG Door Actuating Cylinder Look for Hyd leaks

Main Mount Wheel Well Upper Drag Strut Bungee Spring Lower Drag Strut

Main Mount Wheel Well Upper Jury Strut Gear Pin Lower Jury Strut

Check orange bolts for leaks 7. What does the orange paint mean? TD AMP 6. What does this do? Check for excessive fluid/leaks Check for leaks on the door actuator Check spring, this can break Check bolts

Bonding Braids(used for grounding) (4) Manual Landing Gear release cable Upper Drag Struts Uplock

Mechanical Gear Release Cable Swivel Joint Gear Actuator(Behind): Look for any hyd. fluid, downing discrepancy Down Lock Switch Jury Strut Bungee Spring Lower Drag Strut

Oleo 4-5” min Shuttle Valves Brake Pucks: 8. Bad if ?

Main Mount Wheel Well HRD Pressure Gauges

E handle cables (normally covered) Main Mount Wheel Well “Pie Pans” E handle cables (normally covered)

Pie Pan(access point to hot section) Fire Sensing Element Pie Pan(access point to hot section) E-Handle + power lever cables inside Bleed air Valve (SEDC) Bleed Air plumbing Hydrostatic Tester case 5. Which nacelle is this? EDC Plumbing

HRD Bottles (500psi Min) HRD Discharge line

E handle cables (covered) Main Mount Wheel Well Pie Pans E handle cables (covered)

Nose

Sys Cap 15.75 gallon Usable 8.65 foaming space 5.7 unusable 1.4 Oil Tank Access Panel Sys Cap 15.75 gallon Usable 8.65 foaming space 5.7 unusable 1.4 NACA Vent EDC Dump Door(Sealed Shut on 1&4) Make sure it is secure, a common access point for maintainers Lab Seal- during engine shutdown, ports engine oil Gang Drain, outboard engines don’t have engine breather, use gang drain Heat Exchanger intake vent

5th Stage Discharge Port 3. Purpose? “A” panel, make sure it is secure, a common access point for maintainers Lab Seal Vent (eng oil) Oil Cooler Intake Oil Cooler Exhaust/Door Gang Drain

View from under the prop aft spinner View from under the prop aft spinner. It is normal to have the “X” safety wire, also ok if it is around the perimeter. Drain Plug for the prop control.

Blade(Base is scored to prevent cracking) #4 Prop Blade(Base is scored to prevent cracking) Island Forward Spinner (Continuously Heated during prop deice) Spinner Skirt Cuff

Oil Cooler Generator Cooling Door (Mechanical Function of the E-Handle) 4. Question, is there one on #1 engine, and if so, what is the function?

Bomb Bay Safety Switch / Pin Nose Bomb Bay Safety Switch / Pin

Air Multiplier Package Nose Air Multiplier Package AMP Oil Level Window

Port Heat Exchanger Exhaust Nose APU Safety Switch Port Heat Exchanger Exhaust

TAS Probe Pilot Pitot Tube

10. Limit?

Air Multiplier Turbine (Check for cracks, scores, obstructions, missing blades)

Hydraulic Fluid Mechanical cut-out Bomb Bay Safety Pin

Port Heat Exchanger Ram Air Inlet / Aux Vent Nose Port Heat Exchanger Ram Air Inlet / Aux Vent

Nose TAS Probe LH Pitot Tube

Nose AIP Countermeasures Dispenser - Nose (Blankoff Plate shown)

NWS Actuator Cables Nose Taxi Lights NWS Actuator Cylinder

Nose Wheel Steering Cylinder Tow Bar Attachment

Nose Aux Vent Valve

Nose Battery

Nose APU Fire Bottle

Optical Sensor Converters Nose Optical Sensor Converters

Stbd Heat Exchanger Ram Air Inlet Nose Stbd Heat Exchanger Ram Air Inlet Ice Detector Probe Stbd Pitot Tube

Atmospheric Vent cabin press control UHF-1 Satcom(Batwing) Atmospheric Vent cabin press control Check for no tape SRS ALE 47 “Bug-eye” (OSC) Icing probe Copilot Pitot Tube APU Intake Door SRS

Stbd Heat Exchanger Exhaust Nose Tie Down Hardpoint Stbd Heat Exchanger Exhaust APU Exhaust Door

Fuselage AOA Probe

Right Wing

Pressure Fueling Connectors Right Wing Fueling Panel Pressure Fueling Connectors

Fuselage Tank 5 Drain Mast

Fuselage HSC Sono Disable Door

Hydraulic Service Center #2 Hydraulic Quantity Gauge #1 Hydraulic Quantity Gauge #2 Hydraulic reservoir #1 Hydraulic reservoir

Hydraulic Service Center Emergency Air Brake Bottle Flap Asymmetry Valve

Hydraulic Service Center Emergency Main Landing Gear Release Handle Landing Gear Control Valve

Hydraulic Service Center Hydraulic Pump

Hydraulic Service Center Hydraulic Pump

Hydraulic Service Center

Hydraulic Service Center Aileron Boost Package

Hydraulic Service Center Hydraulic Pressure transmitters Brake Accumulator Hydraulic Filter

Hydraulic Service Center Hydraulic Pump Hydraulic Filters Delta P

Hydraulic Service Center Hydraulic Flap Motor

Sonobuoy Safety Switch Fuselage Sonobuoy Safety Switch

(Access to rudder & aileron booster pkgs) Empennage “Hell Hole” (Access to rudder & aileron booster pkgs)

Fuselage Wing length pic AIP Aft Countermeasures Dispenser (blankoff plate shown)

Fuel Cavity Vent Fuel Cavity Vent Fuel Cavity Vent Tank 5 Drain Mast

MAD Boom(Look to insure not bent) Crash locator VHF Upper (imbedded) UHF-2 Upper HF-1 VOR Loop MAD Boom(Look to insure not bent) Crash locator SU-164/AAR-47 Optical Sensor-Converter for MWS HF-2 Flux Valve 9. Purpose? UHF-2 Lower

Force Link Tab SRS Antenna (Ask an O-4)

SRS Antenna Sat com antenna Head Vent

EBB Discharge Port(no leakage allowed)

Fuel Tank Vents(nothing should be coming out except air)

Fuselage

Fuselage Port Static Ports (plugs installed)

Fuselage HF Antenna Slip Mark

Empennage HF Antennas Rudder Trim Tab Force Link Tab Elevator Trim Tab

Negative Pressure Relief Valve Air Inlet Fuselage “Hell Hole” Negative Pressure Relief Valve Air Inlet

The End