What was found
ON DESCENT IN TO SEATTLE, THE LEFT COWL VALVE GOT STUCK CLOSED. WHEN WE TRIED LATER, THE VALVE WORKED AS IT IS SUPPOSED TO. GROUNDED - YES. REMOVED AND REPLACED #1 INLET COWL TAI VALVE ASSY REF B737-900 AMM 30-21-11.
- Difficulty date
- January 5, 2023
- Submitted
- January 9, 2023
- Operation
- Air carrier
- Aircraft
- N493AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41727
- Aircraft time
- 24,470 hours, 7,687 cycles
- Engine
- Cfmint CFM567B27E
- System (JASC)
- 7510 · Engine Anti-Icing System
- Part
- Anti-Ice Valve
- Part number
- 32156185
- Part serial
- 12710
- Condition
- Stuck
- Location
- Lt Engine
- Part time
- 24,475 hours, 7,688 cycles
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.