What was found
RIGHT PACK LIGHT ILLUMINATED WITH MASTER CAUTION RECALL DURING THE AFTER START CHECKLIST. GROUNDED - YES. REPLACED RT PACK TRIM AIR MODULATING VALVE/ TEMP CONTROL VALVE. OP CHECK/ LEAK CHECK GOOD. OPS NORMAL. TCV FAULT CLEARED.
- Difficulty date
- September 18, 2018
- Submitted
- September 21, 2018
- Operation
- Air carrier
- Aircraft
- N493AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41727
- Aircraft time
- 9,574 hours, 3,237 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Control Valve
- Part number
- 3989085
- Part serial
- 25828
- Condition
- Faulty
- Location
- Ac Bay
- Part time
- 9,612 hours, 3,247 cycles
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.