What was found
DURING CLIMBOUT CABIN WOULD NOT PRESSURIZE. MADE UNSCHEDULED LANDING. A FAILURE IN THE AFT OUTFLOW VALVE A/C MOTOR CAUSED LACK OF VALVE MOVEMENT. REPLACED THE (AFT) MAIN OUTFLOW VALVE.
- Difficulty date
- May 14, 2002
- Submitted
- June 4, 2002
- Operation
- Air carrier
- Aircraft
- N930UA
- Make and model
- Boeing 737522
- Aircraft serial
- 26655
- Aircraft time
- 28,991 hours, 21,525 cycles
- Engine
- Ge CFM56*
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Part number
- 7110032
- Part serial
- 152661
- Condition
- Failed
- Location
- Cabin Pressure
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.