SDR ASAA2018011023133

Service difficulty report · Controller · Boeing 737890

Difficulty date: January 10, 2018
Submitted: January 12, 2018
Operation: Air carrier
Aircraft: N596AS
Make and model: Boeing 737890
Aircraft serial: 35688
Aircraft time: 36,976 hours, 11,280 cycles
System (JASC): 2150 · Cabin Cooling System
Part: Controller
Condition: Faulted
Location: Nr 2
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

ON 6 PACK RECALL, MASTER CAUTION, AIR CONDITIONER, AND RIGHT PACK LIGHTS ILLUMINATED. THE LIGHTS EXTINGUISH WHEN THE MASTER CAUTION LIGHT IS RESET. ACFT GROUNDED. VERIFIED FAULT, ACCOMPLISHED PREV FLT VERIFICATION BITE FOR TEMP CONTROLLER NR 1, NO FAULTS, TEMP CONTROLLER NR 2 SHOWS RAM AIR ACTUATOR FAULT. CLEARED FAULT. ACCOMPLISHED VERIFICATION BITE TEST FOUR TIMES WITHOUT ANY FAULTS ON NR 2 TEMP CONTROLLER IAW FIM 21-62 - 801.