Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- February 6, 2020
- Submitted
- February 11, 2020
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 19,490 hours, 6,179 cycles
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 22101
- Condition
- Failed
- Location
- Rt A/C Pack
- Part time
- 22,228 hours, 7,125 cycles
- Stage of operation
- NR
- 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
RIGHT PACK LIGHT ILLUMINATED DURING RECALL. EXTINGUISHES WHEN RESET. GROUNDED - YES. CONFIRMED FAULT, #2 PACK/ZONE TEMP CONTROLLER BITE TEST REF B737-900 AMM 21-61-00 SHOWS HARD FAIL #2 TCV (V141). REMOVED & REPLACED #2 TCV REF AMM 21-51-10 LK CK & OPS CK NML.