What was found
LH PACK LIGHT ON RECALL RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED B737-900 FIM 21-53 TASK 820 AND FOUND TCV FAULT. RAN FIM 21-62 TASK 830, FAULT WAS NOT ACTIVE AND CLEARED . THIS CLEARS MEL 21-33D.
- Difficulty date
- October 19, 2019
- Submitted
- October 22, 2019
- Operation
- Air carrier
- Aircraft
- N472AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 60580
- Aircraft time
- 18,211 hours, 5,835 cycles
- System (JASC)
- 2150 · Cabin Cooling System
- Part
- Warning Light
- Condition
- False Activation
- Location
- Lt A/C Pack
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.