What was found
AIRCRAFT RETURNED TO MIA, UNABLE TO PRESSURIZE CABIN AND LANDED OVERWEIGHT. *S/D* AFT OUTFLOW VALVE REPLACED TWO DAYS LATER. THERE WAS NO FURTHER PRESSURIZATION PROBLEMS.
- Difficulty date
- January 3, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N778UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26940
- Engine
- Pwa PW4077
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Out Flow Valve
- Part number
- 27406502
- Condition
- Failed
- Location
- Cabin
- Stage of operation
- CL
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.