Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- December 28, 2014
- Submitted
- December 30, 2014
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35681
- Aircraft time
- 28,358 hours, 8,442 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 9754
- Condition
- Malfunctioned
- Location
- Lt A/C Pack
- Part time
- 28,372 hours, 8,446 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
PRIOR TO DEPARTURE LT PACK ILLUMINATED ON RECALL EXTINGUISHED WITH M/C RESET. ACFT GROUNDED. CONFIRMED FAULT, LT PACK ZONE TEMP CONTROLLER BITE FAILS TCV 1 (V139), FOUND TCV 1 OVERHEATED AND LEAKING FLUID. R & R TCV 1 (V139) REF AMM 21-51-10, GROUND FUNCTIONAL CKS/ BITE NORMAL REF AMM 21-61-00-700-806-002.