Flap Door of the Mask Stowage-Box Inoperative

TASK 35-10-00-810-812-A
Flap Door of the Mask Stowage-Box Inoperative

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 35-12-41-000-001	Removal of the Oxygen-Mask Stowage-Box
AMM 35-12-41-200-001	Detailed Inspection of Oxygen Masks (out of box) with Harness Inflated
AMM 35-12-41-400-001	Installation of the Oxygen-Mask Stowage-Box

3. Fault Confirmation
Subtask 35-10-00-700-057-A

A. Test
(1) Do the visual inspection of the flight crew oxygen mask (out of box) AMM 35-12-41-200-001.

4. Fault Isolation
Subtask 35-10-00-810-061-B

A. If during the inspection:
(1) The flap door of the Captain mask stowage-box is deteriorated or inoperative:

replace the STOWAGE BOX-OXY MASK, CAPT [10RN1] AMM 35-12-41-000-001 and AMM 35-12-41-400-001.

(2) The flap door of the First Officer mask stowage-box is deteriorated or inoperative:

replace the STOWAGE BOX-OXY MASK, F/O [10RN2] AMM 35-12-41-000-001 and AMM 35-12-41-400-001.

(3) The flap door of the Third Occupant mask stowage-box is deteriorated or inoperative:

replace the STOWAGE BOX-OXY MASK, 3RD OCCPNT [10RN3] AMM 35-12-41-000-001 and AMM 35-12-41-400-001.

(4) The flap door of the Fourth Occupant mask stowage-box is deteriorated or inoperative:

replace the STOWAGE BOX-OXY MASK, 4TH OCCPNT [5774HM] AMM 35-12-41-000-001 and AMM 35-12-41-400-001.

Subtask 35-10-00-700-058-A

B. Do the test given in Para. 3.A.

[Rev.8 from Aug 2018] 2026.04.04 04:33:35 UTC