Service difficulty report · Control Valve · Boeing 737990ER
FAA SDR system
- Difficulty date
- February 18, 2017
- Submitted
- February 21, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36362
- Aircraft time
- 11,194 hours, 3,650 cycles
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 24519
- Condition
- Failed
- Location
- Lt A/C Pack
- Part time
- 4,877 hours, 1,605 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
ON MASTER CAUTION RECAL CONT CAB ZONE TEMP LIGHT ILLUMINATED. EXTINGUISHED ON M.C. RESET. ACFT GROUNDED. CONFIRMED FAULT, RT PACK/ZONE TEMP CONTROLLER BITE SHOWS HARD FAIL FLIGHT DECK TCV. REMOVED & REPLACED THE FLIGHT DECK TCV IAW AMM 21-61-21, GROUND FUNCTIONAL CHECKED & LEAK CHECKED NORMAL IAW AMM 21-61-00-700-806-002. PACK/ZONE TEMP CONTROLLER BITE TEST.