What was found
CREW O2 LEAK, FLIGHT DIVERTED. COMPLIED WITH LM 4896. FOUND 0-2 LEAK AT THERMAL COMP. UPPER B-NUT AND CHECK VALVE. RE TORQUED AND LEAK CKS OK SEE PTT 8442005.
- Difficulty date
- June 13, 2010
- Submitted
- June 14, 2010
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 43,844 hours, 5,230 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- B-Nut
- Condition
- Leaking
- Location
- Crew Oxygen
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.