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AFCS  OPERATIONAL  CHECK
AFCS OPERATIONAL CHECK (Continued) - TM-55-1520-240-T-3_317

TM-55-1520-240-T-3 CH-47D Heilcopter Manual
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TM 55-1520-240-T 11-3.3  AFCS OPERATIONAL CHECK (Continued) 11-3.3 TASK RESULT 2. Check that following circuit breakers in If any circuit breaker (16 through 24) is open, NO.  2 PDP are closed. close it.  If AFCS NO.  2 circuit breaker (16) opens AC again, go to task 11-3.10. AFCS NO.  2 (16) If NAV PILOT VGI, PLT HSI or PLT HSI circuit NAV PILOT VGI (17) breaker (17, 18, or 19) opens again, refer to NAV PLT HSI (19) TM 11-1520-240-20 for troubleshooting DC information AFCS NO.  2 (20) If AFCS NO.  2 circuit breaker (20) opens again, CYCLIC TRIM AFT ACTR (21) go to task 11-3.11. NAV CONT VG 1 (22) If CYCLIC TRIM AFT ACTR circuit breaker (21) NAV RAD ALT (23) opens again, go to task 11-3.12.  If NAV CONT NAV PLT HSI VGI, RAD ALT, or PLT HSI MODE SEL circuit MODE SEL (24) breaker (22, 23, or 24) opens again, refer to TM 11-1520-240-20 for troubleshooting information. CHECK NO.  1 AFCS 3. Press and hold pilot's CENTERING Control stick and directional pedals shall center DEVICE RELEASE switch (25).  Center easily and remain there after CENTERING pilot's pitch, roll control stick, and direc- DEVICE RELEASE switch (25) is released.  If not, tional pedals.  Release CENTER ING go to task 11-2.3. DEVICE RELEASE switch. GO TO NEXT PAGE 11-49







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