Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- August 8, 2022
- Submitted
- August 12, 2022
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36356
- Aircraft time
- 22,323 hours, 7,001 cycles
- Part
- Control Valve
- Part number
- UNKNOWN
- Condition
- Dirty
- Location
- Unknown
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RH PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL. RESET WITH MC RESET. GROUNDED - YES. ACCOMPLISHED BITE ON BOTH TEMP CONTROLLERS REF B737-900 FIM 21-61 TASK 801.FOUND #2 CONTROLLER TEMP CTRL VALVE FAULT 21-51267 PACK TCV & TEMP CNTRL VALVE 21-51264 TCV STAYING CLOSED). REMOVED R/H PACK TEMP CNTRL VALVE CANNON PLUG & CLEANED, REINSTALLED. CLEARED FAULTS & RETESTED, OPS CHECKS NORMAL.