Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- August 17, 2016
- Submitted
- August 19, 2016
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 11,396 hours, 3,657 cycles
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 8951
- Condition
- Failed
- Location
- Cabin Temp
- Part time
- 34,974 hours, 10,816 cycles
- Stage of operation
- TX
- 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
AFTER ENGINE START, LEFT PACK LIGHT ILLUMINATED, EXTINGUISHED WITH MASTER CAUTION. ACFT GROUNDED. PERFORMED PACK TEMP CONTROLLER BITE TEST IAW AMM 21-51-00-700-80. LT PACK LOGGED "TCV" FAULT. REMOVED & REPLACED THE LT TEMP CONTROL VALVE IAW AMM 21-51-10/401.