What was found
DIVERTED AFTER A RAPID CABIN DECOMPRESSION. THE INBOARD AND OUTBOARD SAFETY RELIEF VALVES FAILED OPERATIONAL TEST AND WERE REPLACED. THE CABIN PRESSURE CONTROLLER WAS ALSO REPLACED PRECAUTIONARY.
- Difficulty date
- February 14, 2004
- Submitted
- March 11, 2004
- Operation
- Air carrier
- Aircraft
- N947UA
- Make and model
- Boeing 737522
- Aircraft serial
- 26688
- Aircraft time
- 31,923 hours, 20,070 cycles
- Engine
- Ge CFM56*
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Safety Valve
- Part number
- 106120921
- Part serial
- 402
- Condition
- Failed
- Location
- Cabin Pressure
- Part time
- 3,328 hours, 2,098 cycles
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- B, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.