Service difficulty report · Control Valve · Boeing 737890
FAA SDR system
- Difficulty date
- June 8, 2017
- Submitted
- June 12, 2017
- Operation
- Air carrier
- Make and model
- Boeing 737890
- Aircraft serial
- 35192
- Aircraft time
- 33,314 hours, 9,999 cycles
- Part
- Control Valve
- Part number
- 3989083
- Part serial
- 11198
- Condition
- Faulted
- Location
- Rt A/C Pack
- Part time
- 33,329 hours, 10,003 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
CONTROL CABIN ZONE TEMP ILLUMINATES ON MASTER CAUTION RECALL, EXTINGUISHES ON RESET. ACFT GROUNDED. CONFIRMED FAULT, RT PACK - ZONE TEMP CONTROLLER BITE SHOWS HARD FAIL FOR FLIGHT DECK TCV. REMOVED & REPLACED TCV (V143) IAW AMM 21-61-21, LEAK & GROUND FUNCTIONAL CHECKS NORMAL IAW AMM 21-61-00-700-806-002.