What was found
SHIP 3922 -ATB- RETURNED TO STL DUE TO INABILITY TO MAINTAIN CABIN PRESSURE. CORRECTIVE ACTION: MAINTENANCE REPLACED THE #2 BLEED AIR REGULATOR PER B737 AMM 36-11 AND CABIN PRESSURE CONTROL MODULE PER B737 AMM 21-31.
- Difficulty date
- February 19, 2025
- Submitted
- February 20, 2025
- Operation
- Air carrier
- Aircraft
- N922DZ
- Make and model
- Boeing 737900ER
- Aircraft serial
- 64886
- Aircraft time
- 17,584 hours, 7,289 cycles
- Engine
- Cfmint CFM567B27B1
- Engine time
- 33,140 hours, 17,041 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Regulator
- Part number
- 1074926
- Part serial
- 15581
- Condition
- Inoperative
- Location
- Cabin Pressure
- Part time
- 33,140 hours, 17,041 cycles
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.