What was found
CONTROL CABIN ZONE TEMP ILLUMINATES ON RECALL. RESETS NORMALLY. ACFT GROUNDED. REMOVED & REPLACED THE RT PACK AFT TRIM MODULATING VALVE IAW AMM 21-61-21. OPS CHECKED NORMAL.
- Difficulty date
- November 7, 2016
- Submitted
- November 9, 2016
- Operation
- Air carrier
- Aircraft
- N402AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41189
- Aircraft time
- 15,894 hours, 5,169 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Valve
- Part number
- 3989083
- Part serial
- 8457
- Condition
- Failed
- Location
- Rt A/C Pack
- Part time
- 40,888 hours, 12,942 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.