SDR ASAA2017090921856

Service difficulty report · Controller · Boeing 737890

Difficulty date: September 9, 2017
Submitted: September 11, 2017
Operation: Air carrier
Aircraft: N593AS
Make and model: Boeing 737890
Aircraft serial: 35107
Aircraft time: 35,993 hours, 11,006 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Controller
Condition: Malfunctioned
Location: Cockpit Temp
Stage of operation: DE
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 DESCENT CHECKLIST, PRESSED RECALL, ZONE TEMP FOR CONTROL CABIN ILLUMINATED, RAN CHECKLIST. ZONE TEMP FOR CONTROL CABIN RESET ON MASTER CAUTION. ACFT GROUNDED. CONTROLLER LOGGED TRIM VALVE FAULT, ACCOMPLISHED PACK / ZONE TEMP CONTROLLER BITE TEST PROCEDURES IAW AMM 21-61-00 AND FAULT CLEARED, NO EXISTING FAULT, CONTROL CABIN ZONE TEMP CONTROL OPS CHECKED GOOD, NO HISTORY 30 DAYS.