What was found
BOS - CREW REPORTED CABIN UNABLE TO PRESSURIZE. EMERGENCY DECLARED, RETURNED TO BOS WITHOUT INCIDENT. REPLACED OUTFLOW VALVE AND ACTUATOR ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATIONS.
- Difficulty date
- July 31, 2009
- Submitted
- August 4, 2009
- Operation
- Air carrier
- Aircraft
- N677AN
- Make and model
- Boeing 757223
- Aircraft serial
- 29427
- Aircraft time
- 34,465 hours, 11,659 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Condition
- Inoperative
- Location
- Cabin Pressure
- Stage of operation
- TO
- 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.