CHI94FA258

NTSB accident investigation · Keuthan, Charles J. Buccaneer II · Oshkosh, WI · August 1, 1994

Accident · Minor injuriesField investigationFinal report
Date
August 1, 1994, 09:20 local (14:20 UTC)
Place
Oshkosh, WI
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N5296CKeuthan, Charles J. Buccaneer II
Weather
Visual (VMC) · Day
Status
Completed · report January 12, 1995
Report
Approved by Office Director
FAA report
19940801019999A
Case key
9385

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

On this page

Probable cause

the pilot's inadvertent stall of the airplane. Factors were the tailwind condition and the pilot's inadequate compensation for the tailwind.

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 control - in flightTakeoff - initial climb
Weather condition - tailwindFactor
Compensation for wind conditions - inadequatePilot in commandFactor
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot was demonstrating the capabilities of the experimental amphibious airplane to the passenger. The pilot reported that during the initial climb following her second water touch-and-go landing, the airplane was approaching the trees on the edge of the lake. She attempted to turn but the airplane descended and impacted the water. A witness reported the airplane stalled and the wing struck the water.

Factual narrative

History of flight

On August 1, 1994, at 0920 central daylight time, an experimental Charles J. Keuthan Buccaneer II airplane, N5296C, sustained substantial damage during a water touch-and-go landing at the Vette Seaplane Base in Oshkosh, Wisconsin. The commercial pilot and the sole passenger sustained minor injuries. The business flight departed the Wittman Regional Airport, Oshkosh, Wisconsin, about 0900 and was conducted under CFR Part 91 in visual meteorological conditions. The planned destination was the Wittman Regional Airport and no flight plan was filed.

The pilot said she was employed by the operator to give demonstration rides to potential customers. The flight was conducted to demonstrate the capabilities of the experimental amphibious airplane to the passenger. They departed the Experimental Aircraft Association (EAA) convention at Wittman Regional Airport and flew to the Vette Seaplane Base.

She flew one uneventful touch-and-go landing on the water. Following the second touch-and-go landing, during the initial climb, she felt like the airplane was not climbing at a normal rate. She said all engine instruments were normal and she thought the airplane was going to impact the trees at the edge of the lake. She attempted to turn and perform an emergency landing, but the airplane descended and impacted the water.

A witness to the accident said he saw the airplane takeoff downwind on a heading of about 210 degrees with northerly winds of about 10 knots. He said it was approaching the trees, turned, and then stalled. A wing tip caught in the water and the airplane spun in.

Personal information

The pilot held a commercial pilot certificate with a single engine land rating. She did not hold a single engine sea rating.

Wreckage and impact information

The NTSB on scene investigation began about 1100. The airplane was located on the shore at the western edge of the Vette Seaplane Base. A witness said he helped to move the airplane up from the water and had extended the landing gear.

The front four feet of the hull was fractured circumferentially in the upward direction. The trailing edge of the right wing was bent downward outboard of the lift struts and the right sponson was twisted. The left forward lift strut was fractured. The engine assembly was twisted on the mount and the fuselage mounted fuel tank was filled with water.

Additional information

Following the on scene portion of the investigation, the wreckage was released to the owner.

Aircraft

Registration
N5296C
Reported as
Keuthan, Charles J. Buccaneer II (BUCCANEER)
Category
Airplane, amateur-built
Serial number
B2B-F036
Engine
Rotax 382, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 91
Operator
Keuthan, Charles J., doing business as Keuthan Aircraft
Registered owner
Kuethan, Charles, J.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · April 30, 1994
Airport
Vette Seaplane Base

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
20
Certificates
Flight engineer, Military, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
234 total · 20 in this make and model · 196 as pilot in command · 34 in the last 90 days · 14 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 10 knots
Visibility
5 statute miles
Lowest ceiling
1,000 ft overcast
Temperature
73 °F, dew point 70 °F
Altimeter
29.00 inHg
Observed at
OSH, 5 nm away

FAA reports on this event · 1

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