What was found
CREW O2 HAS DECREASED FROM 1360 PSI TO 1230 PSI IN 4 HRS W-O USING IT. FOUND REGULATOR VALVE AT CREW BOTTLE LEAKING. R & R VALVE WITH O RINGS LEAK CKS OK. SERVICED O2 TO FULL.
- Difficulty date
- February 3, 2010
- Submitted
- February 5, 2010
- Operation
- Air carrier
- Aircraft
- N775UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26947
- Aircraft time
- 58,323 hours, 10,717 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Regulator
- Part number
- 80316301
- Part serial
- 4446
- Condition
- Leaking
- Location
- Oxygen System
- 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.