SDR ASAA2020092333218

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: September 23, 2020
Submitted: September 25, 2020
Operation: Air carrier
Aircraft: N468AS
Make and model: Boeing 737990ER
Aircraft serial: 41735
Aircraft time: 23,753 hours, 7,631 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Rt 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.

What was found

ON MASTER CAUTION RECALL, RT PACK LIGHT ILLUMINATES, RT PACK LT EXTINGUISHES WITH RESET. GROUNDED-YES. C/W B737-900 FIM 21-53 TASK 821, BITE CK SHOWS NR 2 CONTROLLER THIS PACK TCV. VERIFIES GREEN, RESET CONT, RAN PACK, NO FAULTS NOTED.