Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- August 30, 2015
- Submitted
- September 2, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35187
- Aircraft time
- 32,585 hours, 9,761 cycles
- Part
- Control Valve
- Part number
- 3989084
- Part serial
- 1928
- Condition
- Malfunctioned
- Location
- Lt A/C Pack
- Part time
- 75,455 hours, 34,224 cycles
- Stage of operation
- NR
- How discovered
- 9
- 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 LIGHT ILLUMINATES ON RECALL AND EXTINGUISHES WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED TEMP CONTROLLER BITE TEST, FOUND LT PACK TCV FAULT LIGHT. REF AMM 21-51-00. REPLACED LT TCV REF AMM 21-51-10. OPS & LEAK CK GOOD. BITE TEST PASS REF AMM 21-51-00.