- replace the ACTUATOR-AIR OUTLET FLAP (29HH) (Ref. AMM TASK 21-61-52-000-001) and (Ref. AMM TASK 21-61-52-400-001).
 (1) If the fault continues:

 - do a check and repair the wiring (Ref. ASM 21-61/02) from:

 - the ACTUATOR (29HH) to the PC 2 (27HH) and,

 - the ACTUATOR (29HH) to ground.

 (2) If the fault continues:

 - replace the CONTROLLER-PACK 2 TEMP (27HH) (Ref. AMM TASK 21-61-34-000-001) and (Ref. AMM TASK 21-61-34-400-001).
 D. Do the test as given in the Para. 3.A.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.

 **ON A/C ALL

 TASK 21-61-00-810-816
 Pack 1 Turbine Bypass Valve Fault

 1. Possible Causes
_______________
 - VALVE-TURBINE BYPASS (10HH)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-61-00-710-001 Operational Test of the Pack Temperature-Control
 System
 AMM 21-61-53-000-001 Removal of the Bypass Valve 10HH (30HH)
 AMM 21-61-53-400-001 Installation of the Bypass Valve 10HH (30HH)
 ASM 21-61/04

 3. Fault Confirmation
__________________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 A. Do the operational test of the pack temperature-control system (Ref. AMM TASK 21-61-00-710-001).
 NOTE : If a fault is detected, the PC gives a fault code for shop
____ maintenance in addition to the related CFDS message(s) (refer to TSM chapter 21-63-00, page block 301).
R **ON A/C 401-499,
 A. Do the operational test of the pack temperature-control system (Ref. AMM TASK 21-61-00-710-001).

 **ON A/C ALL

 4. Fault Isolation
_______________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
 A. If the test gives the maintenance message TEST OK, but the POST FLIGHT REPORT and/or the PREVIOUS LEG REPORT gives the maintenance message P1 BYPASS VALVE:
 - no further maintenance action is necessary.
 NOTE : If it is reported that a bypass valve fault has ocurred several
____
 times in flight:

 - replace the VALVE-TURBINE BYPASS (10HH) (Ref. AMM TASK 21-61-53-000-001) and (Ref. AMM TASK 21-61-53-400-001).
R **ON A/C 401-499,
 A. If the test gives the maintenance message TEST OK, but the POST FLIGHT REPORT and/or the PREVIOUS LEG REPORT gives the maintenance message P1 BY PASS VALVE(10HH):
 - no further maintenance action is necessary.
 NOTE : If it is reported that a bypass valve fault has ocurred several
____
 times in flight:

 - replace the VALVE-TURBINE BYPASS (10HH) (Ref. AMM TASK 21-61-53-000-001) and (Ref. AMM TASK 21-61-53-400-001).
 **ON A/C 001-003, 051-054,
 B. If the test gives the maintenance message P1 BYPASS VALVE:
 - replace the VALVE-TURBINE BYPASS (10HH) (Ref. AMM TASK 21-61-53-000-001) and (Ref. AMM TASK 21-61-53-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring (Ref. ASM 21-61/04) from:

 - the VALVE (10HH) to the PC 1 (7HH) and,

 - the VALVE (10HH) to ground.

R **ON A/C 004-049, 055-099, 101-149, 151-199, 201-299, 301-399,
 B. If the test gives the maintenance message P1 BYPASS VALVE:
 - replace the VALVE-TURBINE BYPASS (10HH) (Ref. AMM TASK 21-61-53-000-001) and (Ref. AMM TASK 21-61-53-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring (Ref. ASM 21-61/04) from:

 - the VALVE (10HH) to the PC 1 (7HH) and,

 - the VALVE (10HH) to ground.

R **ON A/C 401-499,
 B. If the test gives the maintenance message P1 BY PASS VALVE(10HH):
 - replace the VALVE-TURBINE BYPASS (10HH) (Ref. AMM TASK 21-61-53-000-001) and (Ref. AMM TASK 21-61-53-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring (Ref. ASM 21-61/04) from:

 - the VALVE (10HH) to the ACSC1 (47HH) and,

 - the VALVE (10HH) to ground.

 **ON A/C ALL
 C. Do the test as given in the Para. 3.A.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.

 TASK 21-61-00-810-817

 Pack 2 Turbine Bypass Valve Fault
 1. Possible Causes
　
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