What was found
CREW O2 LEAK. MULTIPLE LEAKS FOUND. SECURED B-NUT FITTINGS ON HIGH PRESS CROSS. REPLACED FILL VALVE, HIGH PRESSURE REGULATOR, BOTTLE. CHECKED COCKPIT BOX'S AND MASKS. REPLACED TRANSDUCER PRECAUTIONARY.
- Difficulty date
- January 25, 2011
- Submitted
- January 29, 2011
- Operation
- Air carrier
- Aircraft
- N539UA
- Make and model
- Boeing 757222
- Aircraft serial
- 25223
- Aircraft time
- 64,669 hours, 23,772 cycles
- Engine
- Pwa PW2040
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Valve
- Part number
- S417N4402
- Part serial
- 215
- Condition
- Leaking
- Location
- Oxygen System
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.