What was found
UNABLE TO CONTROL CABIN PRESSURE DURING DESCENT. CLOSING HEAT OUTFLOW VALVE AND ADDING POWER HELPED. *S/D* REPLACED CABIN PRESSURE REGULATOR SHUTOFF VALVE.
- Difficulty date
- June 30, 1998
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N7255U
- Make and model
- Boeing 727222
- Aircraft serial
- 21402
- Engine
- Pwa JT8D15
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Valve
- Condition
- Malfunctioned
- Location
- Cabin
- Component
- Sundstrand · 56697
- Stage of operation
- DE
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.