What was found
ENGINE #1 COW VALVE OPEN LIGHT ILLUMINATED WITH TAI AMBER WITH ENGINE ANTI ICE SELECTED ON. GROUNDED - YES. REMOVED AND REPLACED #1 ENG COWL VALVE REF B737-900 AMM 30-21-11.
- Difficulty date
- June 13, 2023
- Submitted
- June 14, 2023
- Operation
- Air carrier
- Aircraft
- N457AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36355
- Aircraft time
- 34,125 hours, 10,815 cycles
- System (JASC)
- 3020 · Air Intake Anti/De-Ice System
- Part
- Valve
- Part number
- 32156185
- Part serial
- 10690
- Condition
- Faulty
- Location
- #1 Engine
- Part time
- 34,116 hours, 10,812 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.