Serious incident Beechcraft 99 N313BA, Wednesday 22 February 1984

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Date:	Wednesday 22 February 1984
Time:	11:08 LT
Type:	Beechcraft 99
Owner/operator:	Britt Airways
Registration:	N313BA
MSN:	U27
Total airframe hrs:	27609 hours
Engine model:	P&W PT6A-20
Fatalities:	Fatalities: 0 / Occupants: 5
Other fatalities:	0
Aircraft damage:	Minor
Category:	Serious incident
Location:	Champaign, IL - United States of America
Phase:	Approach
Nature:	Unknown
Departure airport:	St. Louis, MO ( STL)
Destination airport:	Champaign, IL (KCMI)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PLT REPORTED THAT DURING ARRIVAL TO THE DESTINATION ARPT, HE HEARD A LOUD BANG & THE ACFT BEGAN ROLLING TO THE RIGHT. HE REPORTED THAT HE WAS UNABLE TO CONTROL THE ROLL WITH THE AILERONS, SO HE REDUCED POWER ON THE LEFT ENG & APPLIED LEFT RUDDER. THE CREW WAS THEN ABLE TO MAINTAIN DIRECTIONAL CONTROL OF THE ACFT & MADE A SAFE LANDING. AFTER LANDING, THE LEFT AILERON WAS FOUND TO BE BENT AT THE 2ND HINGE POINT. AN INVESTIGATION REVEALED THAT ON 2/20/84, THE SCREWS ON THE OUTBOARD HINGE OF THE LEFT AILERON WERE IMPROPERLY INSTALLED. THIS ALLOWED THE OUTBOARD SECTION OF THE AILERON TO COME LOOSE.

Probable Cause:

Accident investigation: