Service difficulty report · Oxygen Bottle · Boeing 777300ER

Difficulty date
May 4, 2023
Submitted
May 5, 2023
Operation
Air carrier
Aircraft
N2243U
Make and model
Boeing 777300ER
Aircraft serial
63723
Aircraft time
24,500 hours, 2,723 cycles
Part
Oxygen Bottle
Part number
4441806022
Part serial
4180602208591
Condition
Unserviceable
Location
Lavatory A
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING LAVATORY CDS OXYGEN SYSTEM INSPECTION FOUND LAV ''A'' CDS O XYGEN CYLINDER DISCHARGE INDICATOR DAMAGED. TO REPLACE CDS OXYGEN CYLINDER TEST AS PER AMM TASK 35-21-00-710-801. TEST PASSED. P/N ON:4441806-022 S/N ON:41806-022-05983 FOUND THE LANYARD ASSY DISENGAGED FROM THE OXYGEN CYLINDER. CARRIED OUT OXYGEN BOX LATCH/ACTUATOR OPERATIONAL TEST AS PER AM REPLACED THE OXYGEN CYLINDER AS PER AMM TASK 35-21-02. M TASK 35-21-00-710-801. TEST PASSED. P/N OFF:4441806-022 S/N OFF:41806-022-08591 WORK ACCOMPLISHED BY V943668 REPLACED LAV A OXYGEN CYLINDER AS PER AMM TASK 35-21-02. P/N OFF:4441806-022 S/N OFF:41806-022-06222 P/N ON:4441806-022 S/N ON:41806-022-08591 CARRIED OUT OXYGEN BOX DOOR LATCH/ACTUATOR OPERATIONAL COMPLETED

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