SDR ASAA2016052016802

Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date: May 20, 2016
Submitted: May 23, 2016
Operation: Air carrier
Aircraft: N431AS
Make and model: Boeing 737990ER
Aircraft serial: 43255
Aircraft time: 10,240 hours, 3,343 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Warning Light
Condition: False Activation
Location: Rt A/C Pack
Stage of operation: DE
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

RT PACK CAME ON DURING DESCENT FOLLOWED QRH AND IT REMAINED ILLUMINATED. TURN OFF DURING TAXI TO THE GATE. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE PROCEDURE ON NR 2 CONTROLLER, NO FAULTS NOTED, SYS PASSED. PERFORMED RAM AIR ACTUATOR TEST, NO FAULTS NOTED, REF FIM 21-62, TASK 801. NO HISTORY IN 30 DAYS GROUND VERIFICATION TEST GOOD, REF FIM 21-62.