CHI88DER09

NTSB accident investigation · Smith Miniplane · Superior, WI · August 21, 1988

Accident · Serious injuriesFinal report
Date
August 20, 1988, 19:45 local (Aug 21, 1988, 00:45 UTC)
Place
Superior, WI
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N39FSmith Miniplane
Weather
Visual (VMC) · Day
Status
Completed · report September 11, 1989
Report
Approved by Office Director
FAA report
19880820034279A
Case key
13894

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.

Loss of engine power(total) - mech failure/malfCruise - normal
Fuel system - unapproved partFactor
Maintenance,modification - improperPilot in commandCause
Material inadequatePilot in commandCause
Fuel system,fuel control - fracturedCause
Forced landingDescent - emergency
On ground/water encounter with terrain/waterLanding - flare/touchdown
Terrain condition - rough/unevenFactor

Analysis

While in normal cruise the aircraft experienced a total loss of engine power. The pilot executed an emergency descent to a forced landing. The aircraft encountered unsuitable terrain which resulted in a hard landing and substantial damage to the aircraft. The pilot reported no injuries. Subsequent investigation revealed a fracture of the fuel line, had occurred at the point where the pilot/owner had installed an automotive type fuel pressure regulator. The regulator had not been supported properly to guard against the effects of vibration.

Aircraft

Registration
N39F
Reported as
Smith Miniplane
Category
Airplane, amateur-built
Serial number
DSA-50-1
Airframe hours
395
Engine
Lycoming O-290, 125 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Wayne L. Shelhon
Registered owner
William G. Bertrand
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Unknown · October 18, 1978 · 24 hours before
Departed
Superior, WI

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
45
Certificate
Student
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Front
Flight hours
1,458 total · 63 in this make and model · 37 in the last 90 days · 7 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 9 knots
Visibility
15 statute miles
Lowest ceiling
20,000 ft overcast
Altimeter
29.00 inHg
Observed at
DLH, 18 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.

Other investigations on N39F · 1

Matched to the same aircraft by N-number and date.