Service difficulty report · Modulating Valve · Boeing 737890
FAA SDR system
- Difficulty date
- November 5, 2022
- Submitted
- November 7, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35183
- Aircraft time
- 55,523 hours, 16,583 cycles
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 9143
- Condition
- Faulted
- Location
- Left Ecs Bay
- Part time
- 55,540 hours, 16,586 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ZONE TEMP ILLUMINATES ON RECALL EXTINGUISHES W/ MASTER RESET. GROUNDED - YES. ACCOMPLISHED PZTC BITE AND HAD FLIGHT DECK TRIM VALVE FAULT. ACCOMPLISHED B737-800 FIM 21-62 TASK 832 AND FOUND TCV "V00143" INOP. REMOVED AND REPLACED TCV "V00143" REF B737-800 AMM 21-51-10. OPS CHECK GOOD. LEAK CHECK GOOD. GROUND VERIFICATION TEST SUCCESSFUL.