What was found
WHILE PERFORMING TAI SOLENOID VALVE TEST FOR MW0311 HARNESS TEST ON #2 ENG , PRECOOLER CONTROL VALVE FAILED TO CLOSE IN AIR MODE TRANSITION. GROUNDED - YES. REMOVED AND REPLACED THE #2 ENG PCV PER B737-800 AMM 36-12-02.
- Difficulty date
- April 4, 2023
- Submitted
- April 5, 2023
- Operation
- Air carrier
- Aircraft
- N559AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35178
- Aircraft time
- 57,521 hours, 16,989 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Valve
- Part number
- 632921461
- Part serial
- 5507
- Condition
- Failed
- Location
- #2 Engine
- Part time
- 12,862 hours, 4,008 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.