Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- May 5, 2021
- Submitted
- May 10, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35204
- Aircraft time
- 34,882 hours, 10,122 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 19090
- Condition
- Faulted
- Location
- Left Ecs Bay
- Part time
- 28,295 hours, 8,691 cycles
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REF T/C NG-21EA-23228-1, FOUND TCV FAULT #2 PZTC BITE CK REF 737NG FIM 21-62 TASK 801. GROUNDED - YES. PERFORMED BITE CHECK ON 1 AND 2 CONTROLLER. CONFIRMED L/H TCV INOP. REMOVED L/H TCV. REF B737-800 AMM 21-51-10-000-801, B737-800 FIM 21-62 TASK 874. INSTALLED L/H TCV REF AMM 21-51-10-400-801, FIM 21-62 TASK 874 OPS NRML.