What was found
RIGHT PACK LIGHT ILLUMINATES DURING MASTER CAUTION RECALL AND RESETS WHEN MASTER CAUTION PRESSED. GROUNDED - YES. REMOVED AND REPLACED NUMBER 2 TEMPERATURE CONTROL VALVE IAW B737-900 AMM 21-51-10-000-801 AND 21-51-10-400-801.
- Difficulty date
- April 10, 2023
- Submitted
- April 14, 2023
- Operation
- Air carrier
- Aircraft
- N448AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36356
- Aircraft time
- 24,935 hours, 7,803 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Modulating Valve
- Part number
- 3989083
- Part serial
- 1026
- Condition
- Faulted
- Location
- Rt Ecs Bay
- Part time
- 81,082 hours, 40,276 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.