What was found
RAMP REPORTED L1 DOOR NOT ABLE TO OPEN. GROUNDED - YES. FOUND AIRCRAFT SLIGHTLY PRESSURIZED, SHUT DOWN APU, BLED CABIN PRESSURE OFF, L1 DOOR OPEN AS NORMAL IAW AMM 49-11-00, OUTFLOW VALVE WAS FOUND SHUT. APU OPERATES NORMALLY.
- Difficulty date
- March 16, 2026
- Submitted
- March 18, 2026
- Operation
- Air carrier
- Aircraft
- N448AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36356
- Aircraft time
- 35,560 hours, 10,984 cycles
- System (JASC)
- 2130 · Cabin Pressure Control System
- Part
- Not Reported
- Condition
- Faulted
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.