Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- March 15, 2014
- Submitted
- March 18, 2014
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41731
- Aircraft time
- 5,129 hours, 1,623 cycles
- Part
- Control Valve
- Part number
- 3989084
- Part serial
- 18495
- Condition
- Malfunctioned
- Location
- Rt A/C Pack
- Part time
- 5,153 hours, 1,632 cycles
- Stage of operation
- DE
- 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
RT PACK LIGHT ILLUMINATED DURING DESCENT EXTINGUISHED WITH RESET OF MASTER CAUTION. ACFT GROUNDED. ACCOMPLISHED PACK-ZONE TEMP CONTROLLER BITE IAW AIM TASK 21-62, TASK 801. NR 2 CONTROLLER SHOWS FAULT MESSAGE "TCV". REPLACED RT TEMP CONTROL VALVE IAW AMM 21-61-15. BITE CK GOOD.