What was found
AUTO FAIL LIGHT ILLUMINATED AND CABIN ALT EXCEEDED 10000 FT. REPLACED CABIN PRESSURE MAIN OUTFLOW VALVE REF BOEING 737-400 AMM 21-31-11. FINAL FIX: REPLACED CABIN PRESSURE CONTROLLER REF B737-400 AMM 21-31-21
- Difficulty date
- August 22, 2022
- Submitted
- September 13, 2022
- Operation
- Air carrier
- Aircraft
- N403YK
- Make and model
- Boeing 737
- Aircraft serial
- 25842
- Aircraft time
- 60,832 hours, 41,307 cycles
- System (JASC)
- 2131 · Cabin Pressure Controller
- Part
- None
- Part number
- 7638101
- Part serial
- 90115085
- Condition
- Intermittent
- Part time
- 42 hours, 33 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- B, D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.