SEA83LA158

NTSB accident investigation · Bensen B8M · Wenatchee, WA · July 23, 1983

Accident · Serious injuriesLimited investigationFinal report
Date
July 23, 1983, 14:30 local (21:30 UTC)
Place
Wenatchee, WA
Injuries
1 serious
Damage
Destroyed
Phase of flight
Takeoff
Aircraft
N2279CBensen B8M
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830723035149A
Case key
39738

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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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.

In flight collision with terrain/waterTakeoff
Airspeed - not maintainedPilot in commandCause
Rotor rpm - not maintainedPilot in commandCause
QualificationPilot in commandFactor
Lack of recent experiencePilot in commandFactor

Analysis

Reportedly, the plt had received 7 hrs of dual instruction in the benson gyrocopter. He had been observed taxiing the acft on an unused portion of the arpt during the winter months of 1982 & 1983. However, no flts were observed & the student plt had no endorsement. On 7/30/83, the acft crashed aprx 1 block from the arpt boundry (presumably during takeoff). Reportedly, he had a loss of perception of forward speed after gaining about 100 ft which resulted in a decay of rotor RPM. Subsequently, the gyrocopt entered a descent & made a hard contact with the ground while in an upright position. No preexisting mechanical problems were found during an exam of the gyrocopter.

Aircraft

Registration
N2279C
Reported as
Bensen B8M
Category
Gyroplane, amateur-built
Serial number
3826
Engine
McCulloch 4318A, 72 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Ellery Barnes
Registered owner
Fred W. Eschwig
Airport
EAT · Pangborn

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
40
Certificate
Student
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Center
Flight hours
15 total · 15 in this make and model · 8 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 7 knots
Visibility
30 statute miles
Lowest ceiling
15,000 ft broken
Temperature
90 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
EAT, 1 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.