SDR ASAA2017101822237

Service difficulty report · Controller · Boeing 737990ER

Difficulty date: October 18, 2017
Submitted: October 19, 2017
Operation: Air carrier
Aircraft: N486AS
Make and model: Boeing 737990ER
Aircraft serial: 44107
Aircraft time: 8,368 hours, 2,802 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Controller
Condition: Faulted
Location: A/C Pack
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: D

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

What was found

AFTER PUSH BACK, AND ENG START, BOTH PACK LIGHTS ILLUMINATED DURING RECALL, WENT OUT WITH MASTER CAUTION RESET. ACFT GROUNDED. BOTH AUTO TEMP CONTROLLERS LOGGED RAM AIR SENSOR INLET/EXIT FAULT, ACCOMPLISHED AUTO PACK TEMP CONTROLLER BITE PROCEDURES IAW FIM 21-62-00-810-801, AND FAULT RESET, NO EXISTING FAULT. ALL OPS CHECKED GOOD, NO HISTORY 30 DAYS.