SDR ASAA1159047

Service difficulty report · Unknown · Boeing 737890

Difficulty date: February 15, 2011
Submitted: February 23, 2011
Operation: Air carrier
Aircraft: N594AS
Make and model: Boeing 737890
Aircraft serial: 35191
Aircraft time: 10,974 hours, 3,497 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Unknown
Condition: Malfunctioned
Location: Ac Bay
Stage of operation: TX
How discovered: O
Nature of condition: J
Precautionary procedure: K

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

What was found

CONT CAB "ZONE TEMP" LIGHT ILLUMINATED DURING MASTER CAUTION RECALL ON AFTER START CHECKLIST IN SEA. "ZONE TEMP" LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. ACCOMP BITE CHECK OF THE PACK/ZONE TEMP CONTROLLERS REF M/M 21 61 00 810 801 SHOWED FLT DECK TRIM VLV FAULT ON CONT NR 2. CLEARED FAULT. ACCOMP FIM TASK 21 62 00 810 842. PACKS OP. NORMAL & "ZONE TEMP." LIGHT DID NOT COME ON DURING RECALL. INITIAL EVAL STEP E(3) SHOWS INTERMITANT FAULT. GROUND VERIFICATION GOOD.