What was found
REF ASA TASKCARD NG-36WC-00001, #1 ENG PRECOOLER CONTROL VALVE WILL NOT CLOSE WITH PRESSURE APPLIED. GROUNDED - YES. REMOVED AND REPLACED #1 ENG PRECOOLER CONTROL VALVE REF B737-800 AMM 36-12-02. OPS CHECK, LEAK CHECK GOOD.
- Difficulty date
- May 12, 2022
- Submitted
- May 13, 2022
- Operation
- Air carrier
- Aircraft
- N531AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35199
- Aircraft time
- 42,294 hours, 12,243 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Control Valve
- Part number
- 632921461
- Part serial
- 7525
- Condition
- Not Closed
- Location
- #1 Engine
- Part time
- 7,196 hours, 1,977 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.