What was found
AIRCRAFT WOULD NOT HOLD PRESSURIZATION. PERFORMED OUTFLOW VALVE LEFT AND RIGHT QRH ITEMS TO NO AVAIL. REMOVED AND REPLACED LEFT OUTFLOW VALVE INTERFACE CONTROL UNIT AS PER AMM 21-31-10. OPERATIONAL CHECK GOOD AS PER AMM 21-31-10.
- Difficulty date
- April 27, 2013
- Submitted
- April 29, 2013
- Operation
- Air carrier
- Aircraft
- N451PA
- Make and model
- Boeing 74746NF
- Aircraft serial
- 30809
- Aircraft time
- 53,962 hours, 8,888 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Control Unit
- Part number
- 79688540002
- Part serial
- 97052067
- Condition
- Failed
- Location
- Cabin Pressure
- Part time
- 54,786 hours, 9,382 cycles
- 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.