What was found
#1 ENGINE PRECOOLER CONTROL VALVE INOP. GROUNDED - YES. REPLACED #1 ENG PRECOOLER CONTROL VALVE LEAK/OPS CHECK GOOD REF B737-900 AMM 36-12-02-400-801.
- Difficulty date
- January 4, 2023
- Submitted
- January 5, 2023
- Operation
- Air carrier
- Aircraft
- N461AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36363
- Aircraft time
- 32,903 hours, 10,299 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Control Valve
- Part number
- 632921461
- Part serial
- 7361
- Condition
- Inoperative
- Location
- #1 Engine
- Part time
- 12,236 hours, 3,586 cycles
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.