SDR ASAA2017070921327

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: July 9, 2017
Submitted: July 11, 2017
Operation: Air carrier
Aircraft: N431AS
Make and model: Boeing 737990ER
Aircraft serial: 43255
Aircraft time: 14,702 hours, 4,849 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

AFTER RECALL, RECEIVED A MASTER CAUTION FOR THE RT PACK, EXTINGUISHED ON RESET. ACFT GROUNDED. PERFORMED FIM 21-53 ,TASK 804, RIGHT PACK LIGHT ON DURING GROUND OPS & STAYS OFF AFTER RESET. CHECKED GOOD. OPS NORMAL. NO HISTORY IN 30 DAYS.