What was found
ASA TECH SERVICE REQUEST. FOLLOW UP TO CONTINUING REPORTS OF SQUEALING NOISE IN AFT GALLEY BY R-2 DOOR. GROUNDED - YES. REMOVED AND REPLACED OUTFLOW VALVE WITH NEWER STYLE REF B737-900 AMM 21-31-03.
- Difficulty date
- November 6, 2022
- Submitted
- November 7, 2022
- Operation
- Air carrier
- Aircraft
- N493AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41727
- Aircraft time
- 23,885 hours, 7,507 cycles
- System (JASC)
- 2133 · Pressure Regulator/Outflow Valve
- Part
- Outflow Valve
- Part number
- 40631997201AB
- Part serial
- 9961174
- Condition
- Leaking
- Location
- Cabin Pressure
- Part time
- 60,618 hours, 28,142 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.