SDR DXTA200400313

Service difficulty report · Controller · Gulstm 200

Difficulty date: May 13, 2004
Submitted: May 14, 2004
Operation: Air carrier
Aircraft: N720QS
Make and model: Gulstm 200
Aircraft serial: 085
Aircraft time: 88 hours, 61 cycles
System (JASC): 2161 · Cabin Temperature Controller
Part: Controller
Condition: Malfunctioned
Location: Cabin Cooling
Stage of operation: CR
How discovered: O
Nature of condition: B
Precautionary procedure: A

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

What was found

DURING FLIGHT THE COCKPIT AUTO TEMP MESSAGE ILLUMINATED, AFTER SWITCHING COCKPIT TEMP CONTROLLER TO MANUAL, SYSTEM WAS NORMAL AS LONG AS THE TEMP CONTROL KNOB WAS FULL COLD. PLACED TEMP CONTROL KNOB TO WARM AND NOTICED FUMES OF HOT MELTING PLASTIC, FOLLOWED BY THE COCKPIT DUCT TEMP, HI MESSAGE. RETURNED COCKPIT TEMP CONTROL KNOB TO FULL COLD AND THE WARNING WENT OUT. ITEM IS UNDER INVESTIGATION.