SDR ASAA2016032016019

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: March 20, 2016
Submitted: March 22, 2016
Operation: Air carrier
Aircraft: N402AS
Make and model: Boeing 737990ER
Aircraft serial: 41189
Aircraft time: 13,455 hours, 4,359 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Rt A/C Pack
Stage of operation: NR
How discovered: O
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

RIGHT PACK LIGHT ON RECALL, CLEARS WITH CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE PROCEDURE ON NR 2 CONTROLLER, SHOWED TCU FAULT. RESET NR 2 CONTROLLER CLEARED FAULT REF FIM 21-62, TASK 801. RAN RIGHT PACK FOR 20 MINS, NO FAULTS NOTED. RE-ACCOMPLISHED BITE CHECK ON NR 2 CONTROLLER, NO FAULTS NOTED, FIM 21-62, TASK 801.