SDR CNQ2003F00002

Service difficulty report · Controller · Cessna 750

Difficulty date: September 29, 2003
Submitted: November 4, 2003
Operation: Air carrier
Aircraft: N900QS
Make and model: Cessna 750
Aircraft serial: 7500123
Engine: Allsn AE3007C
System (JASC): 2161 · Cabin Temperature Controller
Part: Controller
Part number: IE4510
Part serial: 02AT04
Condition: Shorted
Location: Cabin Temp
Part time: 2,171 hours
Stage of operation: DE
How discovered: O
Nature of condition: O
Precautionary procedure: O

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

What was found

WHILE DESCENDING THROUGH FL330, THE COCKPIT TEMPERATURE CIRCUIT BREAKER TRIPPED. COCKPIT DISPLAY UNITS NR 1 AND NR 2 WENT INOPERATIVE. UPON FURTHER DESCENT, COCKPIT DISPLAY UNITS NR 4 AND NR 5 WENT INOPERATIVE. ALL DISPLAY UNITS WORKED OK AFTER COOLING OFF. REPLACED TEMPERATURE CONTROLLER, SYSTEM OPERATIONALLY CHECKED GOOD.

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