What was found
FA'S REPORTS LOUD CONTINOUS HUM/NOISE BY L2 DOOR. GROUNDED - YES. REMOVED AND REPLACED OUTFLOW VALVE REF B737-900 AMM 21-31-03. OPS CHECK GOOD.
- Difficulty date
- September 3, 2021
- Submitted
- September 7, 2021
- Operation
- Air carrier
- Aircraft
- N468AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41735
- Aircraft time
- 26,775 hours, 8,605 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Part number
- 2123003AC
- Part serial
- 07115201
- Condition
- Noisy
- Location
- Cabin Pressure
- Part time
- 49,763 hours, 14,833 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.