Burak Stanley A XF4 N9VY

Summary

On 29 February 2000 at about 20:45 local time, a Burak Stanley A XF4 registered N9VY was involved in an accident near Brooksville, Florida, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

29 February 2000 at 20:45

Classification

Accident

Location

Brooksville, Florida, United States

Nearest airport

Hernando County (BKV)

Coordinates

28.4391, -82.5596

Aircraft

Burak Stanley A XF4

Registration

N9VY

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ATL00LA030

1 person had minor injuries.

The owner/builder's failure to build the airplane within the design stress limits of the drive shaft assembly, that resulted in the failure of the Flex Coupling Retention Bolts.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

Approximately 35 minutes in to the flight, the pilot experienced a loss of propeller thrust. The pilot stated that he heard a loud 'bang' from the engine compartment and experienced loss of thrust. The pilot said that the engine tachometer went to redline, and the propeller rpm decreased. The pilot said , changing the engine rpm did not change the propeller rpm. The pilot declared an emergency and started an emergency descent for a landing on runway 27. As the pilot maneuvered the airplane on the final approach, he cleared a stand of trees on the final approach to runway 27. While on short final to land, the airplane initially collided with the ground short of the runway surface and subsequently came to rest on a taxiway. The examination of the wreckage revealed that the Rex Flex Coupling Assembly had failed and that three out of the six Rex Bolts had also failed. The pilot stated that the Flexidyne Drive Shaft was designed for a 100 horse-power engine. The pilot/builder stated that he installed a 150 horse power engine on the airplane.

Quoted verbatim from the NTSB record.