What was found
FWD CAB TEMP CONT ZONE TEMP ILLUMINATED. IT GOES OUT WITH MASTER CAUTION RESET. GROUNDED - YES. REPLACED FWD CABIN TRIM AIR MODULATING VALVE PER B737-900 AMM 21-62-01-400-801, OPS CK GOOD, GREEN "GO" LIGHT ILLUMINATED.
- Difficulty date
- December 11, 2018
- Submitted
- December 15, 2018
- Operation
- Air carrier
- Aircraft
- N472AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 14,701 hours, 4,824 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 29329
- Condition
- Inoperative
- Location
- Rt A/C Pack
- Part time
- 4,602 hours, 1,525 cycles
- Stage of operation
- TX
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.