What was found
SHIP 3771 -ATB/PRESS- RETURNED TO BOS DUE TO UNABLE TO CONTROL PRESSURIZATION AFTER TAKEOFF. CORRECTIVE ACTION: MAINTENANCE REPLACED THE GROUND AIR INLET VALVE PER 737 AMM 21-31. OPS TEST OK, AIRCRAFT RETURNED TO SERVICE.
- Difficulty date
- April 22, 2021
- Submitted
- April 22, 2021
- Operation
- Air carrier
- Aircraft
- N3771K
- Make and model
- Boeing 737832
- Aircraft serial
- 29632
- Aircraft time
- 63,134 hours, 23,477 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Condition
- Damaged
- 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.