What was found
CONT CAB ZONE TEMP LIGHT ON WITH MASTER CAUTION. GROUNDED - YES. R/H PACK/ZONE TEMP CONTROLLER SHOWS HARD FAIL FLIGHT DECK TCV (V143) FAULT. REMOVED & REPLACED TCV REF B737-900 AMM 21-61-21. ORIG SUB DATE: 1/10/2023
- Difficulty date
- January 7, 2023
- Submitted
- January 13, 2023
- Operation
- Air carrier
- Aircraft
- N423AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 35206
- Aircraft time
- 35,233 hours, 11,195 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 233C
- Condition
- Failed
- Location
- Rt A/C Pack
- Part time
- 30,253 hours, 8,823 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.