TM 55-1520-240-T 11-3.3 AFCS OPERATIONAL CHECK (Continued) 11-3.3 TASK RESULT CHECK LONGITUDINAL CYCLIC TRIM ACTUATOR CONTROL 42.    Set CYCLIC TRIM AUTO MANUAL switch (37) to MANUAL. 43.    Set and hold FWD switch (45) to EXT.   FWD CYC TRIM indicator (38) pointer shall move from GND to EXT position.  If it does not, go to task 11-3.35. 44.    Set and hold FWD switch (45) to RET.   FWD CYC TRIM indicator (38) pointer shall move from EXT to RET position.  If it does not, go to task 11-3.35. 45.    Release FWD switch (45).  Set and hold AFT CYC TRIM indicator (39) pointer shall move AFT switch (46) to EXT. from GND to EXT position.  If it does not, go to task 11 -3.36. 46.    Set and hold AFT switch (46) to RET.   AFT CYC TRIM indicator (39) pointer shall move from EXT to RET position.  If it does not, go to task 11-3.36. 47.    Release AFT switch (46). 48.    Set CYCLIC TRIM AUTO MANUAL Pointers on FWD and AFT CYC TRIM indicators switch (37) to AUTO. (38 and 39) shall move to GND positions. CHECK HDG, RAD ALT, AND BARO ALT SWITCHES 49.    Check that SYSTEM SEL switch (26) is at If not, set it to BOTH. BOTH. 50.    Press and hold HDG switch (47).   HDG switch (47) ENGAGED caption shall come on.  If not, go to task 11-3-37. 51.    Release HDG switch (47). 52.    Press and release RAD ALT switch (48). RAD ALT switch (48) ENGAGED caption shall come on and stay on.  If not, go to task 11 -3.38. TASK RESULT 53.    Press and release BARO ALT switch RAD ALT switch (48) ENGAGED caption shall go (49). out.  BARO ALT switch (49) ENGAGED caption shall come on.  If not, go to task 11-3.38. 54.    Set SYSTEM SEL switch to position 1, then BARO ALT switch (49) ENGAGED caption shall to OFF. go out.  If not, replace AFCS control panel. CHECK LONGITUDINAL COCKPIT CONTROL DRIVER ACTUATOR 55.    Set and hold pilot's pitch and roll trim Pitch and roll control sticks shall move forward.  If switch (40) forward. not, go to task 1 1-3-39. 56.    Set and hold pilot's pitch and roll trim Pitch and roll control sticks shall move aft.  If not, switch (40) aft. go to task 11 -3.39. 57.    Repeat steps 55 and 56 using copilot's pitch and roll trim switch (40). NOTE If a problem with AFCS occurred during flight and could not be verified by the AFCS operational check, refer to table 11-3.2 to locate trouble symptom task number. TABLE 11-3.1 BITE TEST NUMBER TASK NO.  OR MAINTENANCE ACTION 4, 5, 7, 8, 10-17, 19-47, 49-69................................................................    Replace computer 75-84, 88, 90-94, 96-127. ...................................................................... 6, 9, 18...........................................................................................    11-3.40 48 ..................................................................................................    11 -3.41 70-74 .............................................................................................    11-3.42 85, 86.............................................................................................    11-3.43 or 11-3.44 87 .................................................................................................. 11-3.45 89 ..................................................................................................    11-3.46 or 11-3.47 95 .................................................................................................. 11-3.48 D145-11910- SPA GO TO NEXT PAGE 11-58  Change 2