What was found
AIR TURNBACK -- LEVEL AT 8,000 FEET A/C WOULD NOT PRESSURIZE. OBSERVED LEFT DUCT PRESSURE AT ABOUT 25 PSI RIGHT WAS AT 0 PSI LEFT PACK ON, ISOLATION VALVE CLOSED. REMOVED AND REPLACED VALVE PER AMM.
- Difficulty date
- January 13, 2013
- Submitted
- January 17, 2013
- Operation
- Air carrier
- Aircraft
- N403WN
- Make and model
- Boeing 7377H4
- Aircraft serial
- 29815
- Aircraft time
- 42,942 hours, 24,872 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Valve
- Part number
- 32895625
- Part serial
- 7426
- Condition
- Faulty
- Location
- Ac Bay
- Stage of operation
- UK
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.