SDR ASAA2016101618366

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: October 16, 2016
Submitted: October 18, 2016
Operation: Air carrier
Aircraft: N569AS
Make and model: Boeing 737890
Aircraft serial: 35184
Aircraft time: 36,797 hours, 11,351 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: 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

LEFT A/C PACK LIGHT ILLUMINATED. EXTINGUISHES WITH MASTER CAUTION RECALL. ACFT GROUNDED. VERIFIED THE LT PACK LIGHT FAULT LIGHT, RESET AFTER MASTER CAUTION, IAW FIM 21-62 TASK 801, PERFORMED PACK TEMP CONTROL BITE PROCEDURE, THIS PACK TCV LIGHT FLAGGED. AFTER VERIFY, GREEN LIGHT "GO" ILLUMINATED, AND THE FAULT RESET, PACK LIGHT NO LONGER ILLUMINATED. PERFORMED BITE PROCEDURE TWICE AND NO FAULTS WERE DETECTED. OPS CHECK GOOD.