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35-22-31
ALL ú ú 01 Page 415 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
OXYGEN MASKS - INSPECTION/CHECK
_______________________________
1. General_______
A. This procedure has these tasks:
(1)
Passenger Oxygen Mask Facepiece Inspection
(2)
Passenger Oxygen Mask Bag and Hose Inspection
B. The mask for the PSU's (passenger service unit) is installed in each PSU oxygen box. You must lower the mask door on the oxygen box to get access to the mask.
C. The oxygen masks are installed in the oxygen box at the the areas identified below. You must manually open the mask door on the oxygen box to get access to the masks.
(1)
Lavatories
(2)
Attendants Station
D. The oxygen masks are installed in the oxygen box at the lavatory and attendant station. You must manually open the mask door on the oxygen box to get access to the masks.
TASK 35-22-31-206-001
2. Passenger Oxygen Mask Facepiece Inspection__________________________________________
A. Equipment
(1) Rod - Metal, 0.125 inch diameter
B. References
(1) AMM 35-22-31/201, Oxygen Masks
C. Access
(1) Location Zone
200 Upper Half Fuselage
D. Procedure
S 916-002
(1)
Read and obey the safety precautions and general instructions before you do the maintenance (AMM 35-22-31/201).
S 016-003
(2)
Manually open the mask door on the oxygen box.
(a)
Push a 0.125 inch diameter rod into the access hole on the door.
(b)
Operate the latch and release the mask door.
(c)
Permit the masks to fall free.
S 216-004
(3) Make sure the facepiece of the oxygen mask is clean and is in a satisfactory condition.
(a) Examine the facepiece for the contamination (dirt, grease, oil, or any other unwanted material).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
35-22-31
ALL ú ú 01 Page 601 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
(b)
Examine the facepiece for damage or deterioration. 1) Make sure it does not have cuts. 2) Make sure it is soft and flexible. 3) Examine it for deterioration. 4) Make sure it does not have more damage.
(c)
Do a check of the headstrap. 1) Make sure it retracts and extends correctly. 2) Make sure it is correctly installed to the facepiece.
S 026-005
(4)
Replace the mask if it is not in a satisfactory condition (AMM 35-22-31/401).
S 866-006
(5)
Put the mask back in the oxygen box (AMM 35-22-31/401).
TASK 35-22-31-206-007
3. Passenger Oxygen Mask Hose and Bag Inspection_____________________________________________
A. Equipment
(1) Rod - Metal, 0.125-inch diameter
B. References
(1)
AMM 35-22-31/201, Oxygen Masks
(2)
AMM 35-22-31/401, Oxygen Masks
C. Access
(1) Location Zone
200 Upper Half Fuselage
D. Procedure
S 916-008
(1)
Read and obey the safety precautions and general instructions before you do the maintenance (AMM 35-22-31/201).
S 016-009
(2)
Manually open the mask door on the oxygen box.
(a)
Push a 1/4-inch diameter metal rod into the access hole on the door.
(b)
Operate the latch and release the mask door.
(c)
Permit the masks to fall free.
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