Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- September 21, 2015
- Submitted
- September 24, 2015
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35681
- Aircraft time
- 31,390 hours, 9,292 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 11903
- Condition
- Malfunctioned
- Location
- Lt A/C Pack
- Part time
- 24,015 hours, 7,510 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 DURING RECALL, MASTER CAUTION & AIR CONDITION LIGHT ILLUMINATED WITH FWD CABIN ZONE TEMP LIGHT ILLUMINATED. LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED LT PACK TEMP CONTROLLER BITE TEST REF 21-61-00. FOUND LT CONTROLLER TCV FAULT 2 X'S, REQ'S LT TCV REPLACEMENT. REPLACED LT TCV REF MM 21-51-10, OPS & LK CK GOOD. REACCOMPLISHED BITE CK REF MM 21-61-00, NO FAULTS.