What was found
CREW COMMENTS: CREW OXYGEN PSI DROPPED FROM 1900 TO 1600 PSI IN 2 HOURS. LEAKING O2 AT B-NUT. TIGHTENED B-NUT, REPLACED COCKPIT GAUGE AND RESTOWED ALL THREE MASKS PROPERLY. NO REPEATS.
- Difficulty date
- August 27, 2007
- Submitted
- August 31, 2007
- Operation
- Air carrier
- Aircraft
- N306UA
- Make and model
- Boeing 737322
- Aircraft serial
- 23667
- Aircraft time
- 59,128 hours, 34,666 cycles
- Engine
- Cfmint CFM563C1
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- B-Nut
- Condition
- Leaking
- Location
- Crew Oxygen Sys
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.