- SW-BLOCKER DOOR DEPLOY, R (4103KS2)
- harnesses J5 and J6
- thrust reverser harness
2. Job Set-up Information______________________
A. Referenced Information
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REFERENCE DESIGNATION
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78-31-00-810-869 Slow Operation or non Deployment of the Thrust Reverser
AMM 71-51-43-000-049 Removal of the ECU (Channel A) to Thrust Reverser Junction Box Harnesses (4213KS)
AMM 71-51-43-400-049 Installation of the ECU (Channel A) to Thrust Reverser Junction Box Harnesses (4213KS)
AMM 78-31-00-710-042 Operational Test of the Thrust Reverser System
AMM 78-31-17-000-001 Removal of the Blocker Door Deploy Switch (4103KS1,4103KS2)
AMM 78-31-17-000-002 Removal of the Beam Electrical Harness
AMM 78-31-17-210-001 Detailed Visual Inspection of the Deploy Switches and Triggers
AMM 78-31-17-400-001 Installation of the Blocker Door Deploy Switch (4103KS1,4103KS2)
AMM 78-31-17-400-002 Installation of the Beam Electrical Harness
3. Fault Confirmation__________________
A. Test
(1) Not applicable.
(2) If the amber REV indication was associated to normal deployment of the blocker doors:
- do the following procedure.
(3) If the blocker doors did not deploy:
- do the relevant procedure per (Ref. TASK 78-31-00-810-869).
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4. Fault Isolation
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A. This fault is generated when the deploy switches indication is intermittent or has failed when reverse is selected. This may cause the engine power to fluctuate between idle and full reverse thrust power.
(1) Do an inspection of the control levers of the thrust-reverser deploy switches and make sure that they operate smoothly (Ref. AMM TASK 78-31-17-210-001).
NOTE : Most probable cause is seizure of the deploy switches control
____ levers or intermittent electrical contact in the switches or in the associated harnesses or play between switch outer lever and bushing or outer lever pad damaged or missing.
(a) If damage is found:
- repair or replace as required.
(b) If nothing is found:
- examine the Post Flight Report and Last Leg Report for fault messages DEPL SW, J5/J6, ECU or DEPLSTW, J5/J6, ECU.
1 If one of these fault messages is present:
_
- do the relevant trouble shooting procedure (Ref TSM CFDS ATA 78).
2 If no fault message is present:
_
- do a check of the harnesses J5 and J6 and the thrust reverser harness from the ECU to the deploy switches for any damage, loose or contaminated connectors including the thrust reverser junction box.
a If damage is found:
_
- clean, retighten connectors or replace harnesses and beam harnesses as required (Ref. AMM TASK 71-51-43-000-049) and (Ref. AMM TASK 71-51-43-400-049)
(c) If nothing is found:
- replace the SW-BLOCKER DOOR DEPLOY, L (4103KS1) SW-BLOCKER DOOR DEPLOY, R (4103KS2) (Ref. AMM TASK 78-31-17-000-001) and (Ref. AMM TASK 78-31-17-400-001).
(d) If nothing is found:
- replace beam harnesses (Ref. AMM TASK 78-31-17-000-002) and (Ref. AMM TASK 78-31-17-400-002).
B. Do an operational test of the thrust reverser (Ref. AMM TASK 78-31-00-710-042) and make sure that the ECAM REV indication is correct. (Amber in transit then green when reverser blocker doors are fully deployed).
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TASK 78-31-00-810-871
Partial deployment of the Thrust Reverser when commanded to deploy on ENG1
1. Possible Causes
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- TR hydraulic tubes
- blocker door actuator
- stow-switches
- electrical harness
- EIU
- HCU (4101KS)
- ECU (4000KS)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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