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AFCS INTERFACE TEST    (Continued)
AFCS INTERFACE TEST (Continued) TEST 10 CCDA  THRUST CONTROL DRIVE  TEST (NO. 1)

TM-55-1520-240-23-9 CH-47D Heilcopter Manual
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TM 55-1520-240-23-9 11-280 AFCS INTERFACE TEST     (Continued) 11-280 TEST 9 COLLECTIVE COCKPIT CONTROL DRIVE ACTUATOR (CCDA) SERVO LOOP OPERATION TEST (NO. 1) 44. Set AFCS SYSTEM SEL switch (1) to 1. 45. Set AFCS line test set switches as follows: a. METER SOURCE switch (3) to ACTUATOR DRIVE. b. ACTUATOR DRIVE CCDA switch (22) to OFF. c. FEEDBACK MONITOR switch (15) to CCDA. d. CCDA BRAKE switch (23) to OFF. e. CCDA CLUTCH switch (24) to OFF. 46. Set ACTUATOR DRIVE CCDA switch (22) to CW. Read digital display (6). Reading shall cycle between  -6.50 and +6.50 VAC. Check meter (25).  Meter pointer shall cycle from  -  to +. 47. Set ACTUATOR DRIVE CCDA switch (22) to CCW. Read digital display (6).  Reading shall cycle between  -6.50 to +6.50 VAC. Check meter (25).  Meter pointer shall cycle from  -  to +. 48. Set ACTUATOR DRIVE CCDA switch (22) to OFF. END COLLECTIVE COCKPIT CONTROL DRIVE ACTUATOR (CCDA) SERVO LOOP OPERATION TEST (NO.1) 11-1182 Change 1







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