NYC02LA049

NTSB accident investigation · Stiles Choctaw · Danville, KY · January 22, 2002

Accident · FatalLimited investigationFinal report
Date
January 22, 2002, 14:45 local (19:45 UTC)
Place
Danville, KY
Injuries
1 fatal
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N97CSStiles Choctaw
Weather
Visual (VMC) · Day
Status
Completed · report August 28, 2002
Report
Approved by Office Director
Parties
FAA FSDO-01
FAA report
20020122001789A
Case key
54059

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

Failure of a connecting rod bearing, which resulted in a loss of engine power during climb.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerClimb
Engine assembly,bearing - failureCause
In flight collision with terrain/waterDescent - emergency

Analysis

Shortly after takeoff, a steady stream of dark gray smoke was seen emanating from the homebuilt gyrocopter. The gyrocopter then turned left, climbed, and appeared to be returning to the airport. However, it impacted a field about 1 mile south of the airport. An FAA inspector examined the engine. When he attempted to rotate the crankshaft by hand, a metal binding was heard. Further examination of the engine revealed that a connecting rod bearing had seized in the number one cylinder. The non-certificated engine had been removed from an automobile, and installed on the gyrocopter by the pilot.

Factual narrative

On January 22, 2002, about 1445 eastern standard time, a Chocktaw homebuilt gyrocopter, N97CS, was substantially damage during a forced landing in Danville, Kentucky. The certificated commercial pilot was fatally injured. Visual meteorological conditions prevailed for the flight that departed Stuart Powell Field (DVK), Danville, Kentucky. No flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

An off-duty Kentucky State Police trooper stated that he witnessed the accident flight. He was traveling north on a road adjacent to the airport between 1430 and 1445, and saw a small yellow gyrocopter ascend from DVK. The gyrocopter made a left turn, and flew overhead. As it passed overhead, the trooper observed a steady stream of dark gray smoke emanating from the gyrocopter. The gyrocopter then appeared to make a left turn and climb as if it was going back toward the airport. The trooper then lost site of the gyrocopter.

The wreckage was located in a field about 1 mile south of DVK, and examined by a Federal Aviation Administration (FAA) inspector. The inspector observed the wreckage inverted, and canted toward its right side. Due to impact damage, he was unable to confirm flight control continuity. The inspector added that the gyrocopter was equipped with a Subaru EJ22 engine, and two separate fuel tanks. The fuel tanks were ruptured, and a strong odor of fuel was present at the accident site. The rotor blades sustained minor damage, and the propeller was not damaged. The inspector was able to rotate the engine crankshaft approximately 30 degrees, but heard metal binding inside the engine.

The pilot's brother further examined the engine. He stated that the connecting rod bearing had seized in the number one cylinder. The pilot's brother added that he did not know the age of the engine, but that the pilot removed it from an automobile and installed it in the gyrocopter.

The pilot's logbook was not recovered. However, according to his brother, the pilot had a total flight experience of approximately 6,500 hours. Of which, about 500-700 hours were in gyrocopters.

An autopsy was performed on the pilot by the Boyle County Coroner's Office, Danville, Kentucky. Toxicological testing was conducted at the FAA Toxicology Accident Research Laboratory, Oklahoma City, Oklahoma.

Aircraft

Registration
N97CS
Reported as
Stiles Choctaw
Category
Gyroplane, amateur-built
Serial number
0001
Airframe hours
175
Engine
Subaru EJ22, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Casey C. Stiles
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · January 10, 2000 · 66 hours before
Departed
DVK · Danville, KY
Airport
DVK · Stuart Powell Field

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
41
Injuries
Fatal
Certificates
Commercial, Private
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Toxicology
Performed
Flight hours
6,400 total · 175 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
50 °F, dew point 21 °F
Altimeter
30.19 inHg
Observed at
DVK, 1 nm away

Docket · 4

The files NTSB released with the investigation on August 5, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.0 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.