What was found
RIGHT PACK LIGHT ILLUMINATES DURING RECALL. ACFT GROUNDED. TEMP CONTROLLER FAULTED THE TCV. REMOVED & REPLACED THE RT TEMP CONTROL VALVE IAW AMM 21-51-10. OPS & LEAK CHECKED GOOD, ACCOMPLISHED THE BITE AGAIN, NO FAULTS NOTED.
- Difficulty date
- December 22, 2017
- Submitted
- December 26, 2017
- Operation
- Air carrier
- Aircraft
- N474AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40715
- Aircraft time
- 9,972 hours, 3,278 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 26503
- Condition
- Faulted
- Location
- Rt A/C Pack
- Part time
- 6,002 hours, 1,966 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.