ACKLAND JEFFREY DEAN SH 3R

Columbus, GA — September 3, 2014

Event Information

DateSeptember 3, 2014
Event TypeACC
NTSB NumberERA14LA422
Event ID20140904X85723
LocationColumbus, GA
CountryUSA
Coordinates32.51639, -84.93889
AirportColumbus Airport
Highest InjuryNONE

Aircraft

MakeACKLAND JEFFREY DEAN
ModelSH 3R
CategoryAIR
FAR Part091
Aircraft DamageSUBS

Conditions

Light ConditionDAYL
WeatherVMC

Injuries

Fatal0
Serious0
Minor0
None2
Total Injured0

Event Location

Probable Cause

The mechanic’s improper installation of the landing gear extend/retract switch, which resulted in the retraction of the landing gear during the aborted takeoff.

Full Narrative

On September 3, 2014, about 1201 eastern daylight time, an Ackland SH-3R (Glasair III), N333AW, collided with a taxiway sign following a rejected takeoff and landing gear retraction at Columbus, Georgia (CSG). The commercial pilot and one passenger were not injured, and the airplane was substantially damaged. The experimental, amateur-built airplane was operated under the provisions of 14 CFR Part 91 by the pilot. Day, visual meteorological conditions prevailed for the personal flight, and no flight plan was filed. The flight was destined for Crestview, Florida (CEW).

The pilot reported the airplane had been at CSG undergoing avionics installations for several weeks and he was returning it to his home base. During the takeoff roll on runway 24, while passing 80 knots, the pilot's canopy began to open. He would later report that the canopy handle became unsecured due to aircraft vibration, which had happened previously. The left wing came up and the pilot rejected the takeoff. The airplane began to settle as the landing gear collapsed. The airplane departed the right side of the runway and struck a taxiway sign. The airplane came to rest in the grass, adjacent to the runway.

An inspector with the Federal Aviation Administration responded to the accident site and examined the wreckage. The inspector confirmed structural damage to the left wing. The aircraft was then moved to a hangar for inspection of the landing gear system. The inspection revealed that the landing gear extend/retract switch was installed upside-down in the newly-replaced instrument panel. Troubleshooting revealed that the switch was in the "retract" position during preflight and takeoff; however, the safety squat switch on the landing gear prevented gear retraction on the ground. Once weight was removed from the landing gear during the takeoff sequence, the gear retracted.

The inspector also reported that the mechanic for the avionics company did not perform a functional check (gear swing) on N333AW after the avionics installation. They did not possess a set of aircraft jacks to accomplish this and did not try to procure a set.

About This NTSB Record

This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.

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