Impossibility to Open the Forward Passenger/Crew Door

TASK 52-11-00-810-824-A
Impossibility to Open the Forward Passenger/Crew Door

1. Possible Causes

guide arms
[360RH1]
[360RH2]
telescopic rod mechanism
bolt of the telescopic rod
door suspension
door locking mechanism
door escape slide release mechanism
forward passenger/crew door

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 52-10-00-614-001	Discharging/Charging of the Door Damper and Emergency Operation Cylinder of the Passenger/Crew Doors
AMM 52-11-00-820-001	Adjustment of the FWD Passenger/Crew Door
AMM 52-11-11-000-001	Removal of the FWD Passenger/Crew Door
AMM 52-11-11-400-001	Installation of the FWD Passenger/Crew Door
AMM 52-11-12-000-003	Removal of the Guide Arms
AMM 52-11-12-220-001	Detailed Visual Inspection of the Door Suspension Mechanism
AMM 52-11-12-400-003	Installation of the Guide Arms
AMM 52-11-14-000-001	Removal of the Door-Damper and Emergency-Operation Cylinder
AMM 52-11-14-000-002	Removal of the Telescopic Rod
AMM 52-11-14-200-001	Inspection/Check of the Damper and Emergency-Operation Cylinder of the FWD Passenger/Crew Door
AMM 52-11-14-220-001	Detailed Visual Inspection of the Mechanism of the Door-Damper and Emergency- Operation Cylinder
AMM 52-11-14-400-001	Installation of the Door-Damper and Emergency-Operation Cylinder
AMM 52-11-14-400-002	Installation of the Telescopic Rod

3. Fault Confirmation
Subtask 52-11-00-710-070-A

A. Test
Not applicable, the fault is evident.

4. Fault Isolation
Subtask 52-11-00-810-073-A

A. If you cannot open the door:
(1) Get access to the aircraft by a different passenger/crew door.
(2) On the blocked door:

Cut the upper part of the support arm lining panel to get access to the door damper and emergency-operation cylinder.
Discharge the door damper and emergency-operation cylinder AMM 52-10-00-614-001 to open the door.

(3) When the forward passenger/crew door is open:
(a) Make sure that the guide arms are in correct condition AMM 52-11-12-220-001.
1 If the inspection is not OK:

Replace the guide arms AMM 52-11-12-000-003 and AMM 52-11-12-400-003.

2 If the inspection is OK:

Do an inspection of the door damper and emergency-operation cylinder AMM 52-11-14-200-001.

a If the inspection is not OK:

Replace the [360RH1] or [360RH2] AMM 52-11-14-000-001 and AMM 52-11-14-400-001.

b If the inspection is OK:

Do a visual inspection of the telescopic rod mechanism, (part by part after disassembly) AMM 52-11-14-220-001.

* If the inspection is not OK:
* - Replace the telescopic rod mechanism and the bolt of the telescopic rod AMM 52-11-14-000-002 and AMM 52-11-14-400-002.

* If the inspection is OK:
* - Do an inspection and repair, if necessary, the door suspension , the door locking mechanism and the door escape slide release mechanism .
* - Replace the bolt of the telescopic rod AMM 52-11-14-000-002 and AMM 52-11-14-400-002.

3 Do an adjustment of the forward passenger/crew door AMM 52-11-00-820-001.
(4) If the fault continues:

Replace the forward passenger/crew door AMM 52-11-11-000-001 and AMM 52-11-11-400-001.

[Rev.8 from Aug 2018] 2026.04.04 04:34:44 UTC