What was found
AT FLIGHT LEVEL 33.0 LOST PRESSURIZATION, OXYGEN MASKS DEPLOYED INADVERTENTLY. CABIN SAFETY PRESSURE RELIEF VALVES FAILED. REPLACED INBOARD & OUTBOARD RELIEF VALVES.
- Difficulty date
- January 4, 2004
- Submitted
- February 10, 2004
- Operation
- Air carrier
- Aircraft
- N377UA
- Make and model
- Boeing 737322
- Aircraft serial
- 24642
- Aircraft time
- 40,062 hours, 28,624 cycles
- Engine
- Ge CFM56*
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Relief Valve
- Part number
- 7207375
- Part serial
- MR21395
- Condition
- Failed
- Location
- Cabin Pressure
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- B
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.