SDR ASAA2016082617803

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: August 26, 2016
Submitted: August 29, 2016
Operation: Air carrier
Aircraft: N472AS
Make and model: Boeing 737990ER
Aircraft serial: 60580
Aircraft time: 5,581 hours, 1,777 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Lt A/C Pack
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LEFT PACK LIGHT ILLUMINATES ON RECALL EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE, IAW FIM 21-61 TASK 801, FAULTED TCV ON LEFT PACK, CLEARED AND TEST 2 MORE TIMES, FAULT DID NOT COME BACK, CHECKS GOOD FOR SERVICE.