1. TH-67 RMI Program KI 825 EHSI Installation
ADVANCED DIVISION
MOI/QC
URS

2. Purpose/Overview
Update on Reliability and Maintainability Improvement (RMI) Program
EHSI Cockpit differences
Switchology & Displays GPS/VLOC
EHSI Standardization
EHSI Additional Display modes

3. RMI Program Major Overhaul of Airframe and Flight Controls
Structural Reinforcements and Upgrades
Complete Airframe Rewire w/ Single Point Ground
Install Aluminum Pitot Static System
Airframe Corrosion Inspection, Strip & Paint
Obsolete Structure removals
Airframe Upgrades:
LED Lighting System – Landing/Searchlight STC in work
AFS Inlet Barrier Filters
Dart Skids
Seat Cushion Upgrade-
STC in work
Standby Generator Upgrade (IFR) STC in work
Thixosyn- Main & T/R Hub Lubricant
Windshield Install w/Screws STC Approved
Avionics Upgrades For Maintainability:
KI- 825 EHSI
KX-165A, VHF
KTR-909B, UHF w/ Shock Mounted X-Receiver
GNS-430W, GPS
Install DSU Appareo
ALERTS system in remainder of fleet - Pending

4. EHSI Cockpit Differences

5. Switchology GPS/VLOC
Pressing GNS 430 CDI selector one time switches GNS 430, Right HSI, and both RMI
NAV Single Bar Pointers between GPS and VLOC mode with appropriate mode
indicated on GNS 430 display and Remote Enunciator Panel.

6. Switchology: Left HSI GPS to VOR
Left HSI: Switched with MENU selector

7. Switchology: Left HSI GPS to VOR
Left HSI: Turn right knob to VOR, then press MENU to select

8. Switchology: Left HSI GPS to VOR
Left HSI: NAV-2 VOR now displayed
Notice CDI and HDG BUG digital display in upper left corner

9. GPS Display Color
BLUE (cyan) when in non-approach phase

10. GPS Display Color Green when in approach phase
Notice DIST to WPT and GS/TTS digital display in upper right corner

11. GPS DTK Sequencing GPS CRS automatically displays/sequences DTK
No need to use HSI Knob to change x-ing WPTs

12. Switchology: GPS OBS Mode
OBS CRS set through Right-Knob Vs HSI Knob

13. LOC (ILS) Display: Centered
Glide Slope displayed only on right side of HSI
“LOC” displayed
For LOC or ILS

14. LOC Display: Half-Scale

15. Switchology: Shortcuts
MENU Button:
Press and hold for 2-sec to permit brightness adjustment.
Sync HDG BUG-Press to enter menu mode, press again to
exit and hold 1-sec. HDG BUG will sync to current hdg.

16. Standardization
For IERW training, only use normal HSI mode to keep it the same as the “old” HSI (will have a mixed fleet!)
All other FTG standards remain the same.

17. Display Menu Options

18. Additional Display Modes: 360 MAP mode

19. Additional Display Modes: ARC MAP mode

20. Additional Display Modes: ARC/360 MAP mode RNG

21. Observations Easy to set manual CRS wrong, double-check student
If you can’t resist, experiment with your own HSI. Don’t play with student’s HSI!
When more of a mixed fleet exists, students will likely forget to manually set GPS CRS with “old” HSI
HFS update being coordinated

22. QUESTIONS?