Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- July 21, 2019
- Submitted
- July 25, 2019
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35091
- Aircraft time
- 49,061 hours, 14,592 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 10046
- Condition
- Failed
- Location
- Ac Bay
- Part time
- 44,371 hours, 13,222 cycles
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL LEFT PACK LIGHT ILLUMINATED RESET WITH MASTER CAUTION RESET. GROUNDED - YES. CONFIRMED FAULT, LT PACK-ZONE TEMP CONTROLLER BITE SHOWS LT TCV (V139) FAULTS. REMOVED & REPLACED #1 TCV REF AMM 21-51-10, LK CK & OPS CK NML REF AMM 21-61-00-700-806-002.