What was found
#1 ENG ANTI-ICE INOP COWL VALVE OPEN LIGHT STAYS BRIGHT BLUE WITH SWITCH ON WITH N1 TAI IN AMBER. GROUNDED - YES. REMOVED & REPLACED #1 ENG COWL TAI VALVE REF B737-900 AMM 30-21-11.
- Difficulty date
- May 1, 2023
- Submitted
- May 3, 2023
- Operation
- Air carrier
- Aircraft
- N409AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41733
- Aircraft time
- 36,950 hours, 11,766 cycles
- System (JASC)
- 7510 · Engine Anti-Icing System
- Part
- Anti-Ice Valve
- Part number
- 32156185
- Part serial
- 14406
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 18,582 hours, 5,966 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.