ATL94LA013

NTSB accident investigation · Bowermaster B-8M · Cowpens, SC · November 10, 1993

Accident · Serious injuriesLimited investigationFinal report
Date
November 10, 1993, 17:53 local (21:53 UTC)
Place
Cowpens, SC
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N10343Bowermaster B-8M
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 1994
Report
Approved by Office Director
FAA report
19931110042569A
Case key
3321

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

Fuel starvation which resulted from unported fuel in the fuel tank due to inadequate design of the tanks.

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 power(total) - nonmechanicalApproach
Fluid,fuel - starvationCause
Fuel system,tank - inadequate
Aircraft/equipment inadequateProduction/design personnelCause
Forced landingDescent - emergency
In flight collision with objectDescent - emergency
Object - tree(s)
In flight collision with terrain/waterDescent - emergency

Analysis

On final approach, the gyroplane lost power and the pilot force landed the aircraft in trees short of the landing area. Examination of the wreckage revealed no evidence of mechanical failure. Fuel was found in the tank and fuel system after the accident. The owner of the aircraft stated that the tanks were susceptible to fuel sloshing and that this may cause fuel starvation.

Factual narrative

On November 10, 1993, at 1753 eastern daylight time, a Brady C. Bowermaster B-8M, N10343 was substantially damaged following a collision with terrain near Cowpens, South Carolina. The private pilot received serious injuries in the accident. The aircraft was being operated under 14 CFR Part 91 by the pilot. Visual meteorological conditions existed at the time, and no flight plan had been filed for the local personal flight.

Witnesses reported that they observed the aircraft maneuvering around the airport. The pilot reported that the engine lost power while approaching for landing and that he autoratated and force landed the aircraft in forest terrain. The aircraft struck a group of trees near the side of the runway at the private sod airfield and crashed into the terrain. Post accident examination of the gyroplane revealed no evidence of mechanical failure of the engine. Fuel was found in the fuel tank and fuel system after the accident. The owner of the aircraft stated that the fuel tanks were susceptible to fuel sloshing and that it may cause momentary fuel starvation.

Aircraft

Registration
N10343
Reported as
Bowermaster B-8M
Category
Gyroplane, amateur-built
Serial number
BCB-232
Engine
McCulloch O-100-1, 72 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Gallman, Leonard W. Sr.
Airworthiness certificate
Special, Experimental (Special)
Airport
NONE · Private, runway 5, 1,900 × 100 ft, grass/turf

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
32
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
1,209 total · 1,135 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
129° at 4 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 36 °F
Altimeter
30.00 inHg
Observed at
GSP, 20 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.