AFCS VISUAL CHECK

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 11-3.2 AFCS VISUAL CHECK 11-3.2 INITIAL SETUP Applicable Configurations: All Tools: Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692 Materials: None Personnel Required: 35K10 Avionic Mechanic References: TM 55-1520-240-23 Equipment Condtion: TM 55-1520-240-23 Battery Disconnected Electrical Power Off Hydraulic Power Off Pylon Left Work Platform Open Forward Left Work Platform Open Flight Controls Closet Acoustic Blanket Removed Electronic Compartment Acoustic Blanket Removed Flight Controls Closet Panel Open TASK RESULT 1. 2. 3. 4. 5. 6. 7. 8. Check AFCS panel. Check FWD and AFT CYC TRIM indica- tors (4 and 5). Check pilot’s radar altimeter (6). Check pilot’s HSI (7). Check pilot’s HSI MODE SELECT panel (8). Check pilot’s pitch and roll trim switch (9). Repeat steps 4, 5, and 6 for copilot’s radar altimeter HSI, and HSI MODE SELECT panel (6, 7, and 8). then go to step 8. Check copilot’s pitch and roll trim switch (9). If knob (1) is loose, tighten it. If any switch (2 or 3) is damaged, replace AFCS panel. If either indicator (4 or 5) is damaged, replace it. If altimeter (6) is damaged, replace it. IF HSI (7) is damaged, replace it. If panel (8) is damaged, replace it. If switch (9) is damaged. replace it. If switch (9) is damaged, replace it. GO TO NEXT PAGE 11-44

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