Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- May 25, 2010
- Submitted
- May 28, 2010
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35683
- Aircraft time
- 10,292 hours, 3,122 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 8295
- Condition
- Malfunctioned
- Location
- Ac Bay
- Part time
- 15,439 hours, 4,718 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START LT PACK LIGHT ILLUMINATED & WOULD NOT EXTINGUISH PER QRH CHECKLIST COMMANDS. FOUND PRIMARY TEMP CONTROL VALVE FAULT. REPLACED L PACK TEMP CONTROL VALVE REF AMM 21 51 10 OPS & LEAK CHECK NORMAL. GROUND VERIFICATION CHECK ACCOMPLISHED. LT PACK OVERHEAD ANNUNC REMAINS EXTINGUISHED W/MSTR CAUTION P/T/T.