Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- May 21, 2019
- Submitted
- May 24, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35179
- Aircraft time
- 48,736 hours, 14,603 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 10470
- Condition
- Faulted
- Location
- Ac Bay
- Part time
- 41,951 hours, 13,141 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
LEFT PACK ILLUMINATES WITH MASTER CAUTION RECALL AND EXTINGUISHES ON MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK ZONE TEMP CONTROLLER BITE PER AMM 21-61-00 #1 CONTROLLER FAULTED LT PACK TEMP CONTROL VALVE (TCV). REMOVED LT PACK TCV PER AMM 21-51-10-000-801. INSTALLED TCV PER AMM 21-51-10-400-801 OPS CHECKED SAME AMM, OPS CHECKED GOOD. LEAK CHECKED GOOD.