Serious incident Cessna S550 Citation S/II N570RC, Wednesday 21 March 1990

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Date:	Wednesday 21 March 1990
Time:	15:50 LT
Type:	Cessna S550 Citation S/II
Owner/operator:	Rosewood Assets, Inc.
Registration:	N570RC
MSN:	S550-0070
Engine model:	P&W JT15D-4B
Fatalities:	Fatalities: 0 / Occupants: 4
Other fatalities:	0
Aircraft damage:	None
Category:	Serious incident
Location:	Dallas, TX - United States of America
Phase:	En route
Nature:	Executive
Departure airport:	Naples, FL (KADF)
Destination airport:
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
DURING A DESCENT THROUGH 14,000 FEET THE PILOT TURNED THE AIR CONDITIONING UNIT ON. IMMEDIATELY AFTER TURNING ON THE AIR CONDITIONING UNIT THE PILOT REPORTED UNCOMMANDED AIRPLANE EXCURSIONS. THE PIC ANALYZED THE PROBLEM AND LANDED WITHOUT INCIDENT AT HIS DESTINATION. AN INSPECTION REVEALED THAT THE AIR CONDITIONING UNIT HAD SHORTED OUT AND SEVERED THE ELEVATOR CONTROL CABLE. THIS WAS THE FIRST OPERATION OF THE AIR CONDITIONING UNIT SINCE INSTALLATION.

Probable Cause: IMPROPER INSTALLATION OF THE AIR CONDITIONING UNIT, WHICH RESULTED IN AN ELECTRICAL SHORT WHICH CAUSED SEPARATION OF AN ELEVATOR CONTROL CABLE.

Accident investigation: