Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- July 14, 2017
- Submitted
- July 17, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 61620
- Aircraft time
- 5,446 hours, 1,749 cycles
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 20546
- Condition
- Faulted
- Location
- Rt A/C Pack
- Part time
- 12,631 hours, 4,047 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 ILLUMINATES ON RECALL. ACFT GROUNDED. CONFIRMED FAULT, RT PACK/ZONE TEMP CONTROLLER BITE SHOWS INTERMITTENT TCV NR 2 (V141) FAILED MESSAGE 21-51267. GVI TCV NR 2, SHOWS OVERHEAT & FLUID LEAK. REMOVED & REPLACED THE TCV NR 2 IAW AMM 21-51-10, GROUND FUNCTIONAL & LEAK CHECKED NORMAL IAW AMM 21-61-00-740-801-002.