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.
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