No Thrust Reverser Movement Although there is an Operation Control Input

---

1. Possible Causes
· HCU-THRUST REV (4101KS)
2 Job Set-up Information
A. Referenced Information
REFERENCE DESIGNATION
Ref. AMM 78-31-51-000-010 Removal of the Thrust Reverser Hydraulic Control Unit
Ref. AMM 78-31-51-400-010 Installation of the Thrust Reverser Hydraulic Control Unit
3. Fault Confirmation
Subtask 78-30-00-710-139-A
A. Test
Not applicable.
4. Fault Isolation
Subtask 78-30-00-810-107-A
A. If the fault symptom is identified by the crew observation : ENG2 - no thrust reverser movement although
there is an operation control input:
· do a check to make sure that the inhibition lever is not in the inhibition position.
(1) If not:
· replace the HCU-THRUST REV (4101KS) Ref. AMM 78-31-51-000-010 and Ref.
AMM 78-31-51-400-010 . [Rev.6 from Feb 2017] 2026.04.04 04:38:08 UTC