R A/C pitch up or down more than 2.5 degrees per minute
1. Possible Causes
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- ELAC-2 (2CE2)
- ACCLRM-3 (12CE3)
- ACCLRM-4 (12CE4)
- wirings
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 27-92-16-000-001 Removal of the Flight Control Accelerometer (12CE1,12CE2,12CE3,12CE4) AMM 27-92-16-400-001 Installation of the Flight Control Accelerometer
(12CE1,12CE2,12CE3,12CE4)
AMM 27-93-34-000-001 Removal of the ELAC (2CE1,2CE2)
AMM 27-93-34-400-001 Installation of the ELAC (2CE1,2CE2)
ASM 27-92/24
3. Fault Confirmation
__________________
A. Not applicable, you cannot confirm this fault on the ground.
4. Fault Isolation
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A. If the fault is identified by the crew observation: R A/C pitch up or down more than 2.5 degrees per minute
- replace the ELAC-2 (2CE2) (Ref. AMM TASK 27-93-34-000-001) and (Ref. AMM TASK 27-93-34-400-001).
(1) If the fault continues during the subsequent flight:
- replace the ACCLRM-3 (12CE3) and ACCLRM-4 (12CE4) (Ref. AMM TASK 27-92-16-000-001) and (Ref. AMM TASK 27-92-16-400-001).
(2) If the fault continues during the subsequent flight:
- Do a check and repair these wirings: (Ref. ASM 27-92/24) . ANI 4-1 signal from ELAC-2 MON side to ACCLRM-3. . ANI 4-1 signal from ELAC-2 COM side to ACCLRM-3. . ANI 4-2 signal from ELAC-2 MON side to ACCLRM-4. . ANI 4-2 signal from ELAC-2 COM side to ACCLRM-4.
TRIMMABLE HORIZONTAL STABILIZER (THS) - FAULT ISOLATION PROCEDURES
__________________________________________________________________
TASK 27-40-00-810-801
Failure of the THS Actuator Servo Motor 3 for the SEC 2
1. Possible Causes
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- SEC-2 (1CE2)
- RELAY-PITCH TRIM ACTUATOR MOTOR 3 SPLY (36CE3)
- electronic module 3
- wiring of the enable signal from the THS actuator (9CE) to the SEC 2 (1CE2)
- wiring of the DSI-25 signal from the SEC 2 (1CE2) to the THS actuator (9CE)
- wiring from the relay (36CE3) to the SEC 2 (1CE2) and to the THS actuator (9CE)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 27-44-57-000-002 Removal of the Electronic Modules of the Pitch Trim Actuator AMM 27-44-57-400-002 Installation of the Electronic Modules of the Pitch
Trim Actuator
AMM 27-94-34-000-001 Removal of the SEC (1CE1,1CE2,1CE3)
AMM 27-94-34-400-001 Installation of the SEC (1CE1,1CE2,1CE3)
AMM 27-96-00-710-022 Operational Test of the THS Actuator Electrical
Control (Activation for BITE Test) R AMM 27-96-00-740-001 BITE Test of the EFCS (Ground Scanning) ASM 27-94/13
3. Fault Confirmation
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A. Test
(1) Do the operational test of the THS actuator electrical control (Ref. AMM TASK 27-96-00-710-022).
NOTE : Do the ground setting only with the SEC 2.
____
(2) Do the BITE test of the EFCS (ground scanning) (Ref. AMM TASK 27-96-00-740-001).
NOTE : Wait 60 seconds before you start the BITE test.
____
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-40-00∞∞∞∞∞∞∞∞∞∞Page 201
May 01/00 CES
4. Fault Isolation
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A. If the BITE test gives the maintenance message: THS ACTR SERVO MOT 3 9CE OF SEC2
- replace the SEC-2 (1CE2) (Ref. AMM TASK 27-94-34-000-001) and (Ref. AMM TASK 27-94-34-400-001).
(1) If the fault continues:
- replace the RELAY-PITCH TRIM ACTUATOR MOTOR 3 SPLY (36CE3) (Ref. IPC 27920803).
(2) If the fault continues:
- replace the electronic module 3 (Ref. AMM TASK 27-44-57-000-002) and (Ref. AMM TASK 27-44-57-400-002).
(3) If the fault continues:
- do a check of the wiring of the enable signal from the THS actuator (9CE) to the SEC 2 (1CE2) (Ref. ASM 27-94/13).
(a) If there is no continuity, repair the wiring.
(b) If there is continuity:
- do a check of the wiring of the DSI-25 signal from the SEC 2 (1CE2) to the THS actuator (9CE) (Ref. ASM 27-94/13).
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