BFO95LA072

NTSB accident investigation · Kolb Twinstar · Abingdon, VA · June 25, 1995

Accident · No injuriesLimited investigationFinal report
Date
June 25, 1995, 19:30 local (23:30 UTC)
Place
Abingdon, VA
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Approach
Aircraft
N7165LKolb Twinstar
Weather
Visual (VMC) · Day
Status
Completed · report August 31, 1995
Report
Approved by Office Director
FAA report
19950625049339A
Case key
9062

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

The loss of engine power due to undetermined reasons. Factors found to be involved in this accident were the condition inspection was overdue and the inadequate training received by the student pilot owner/builder.

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 powerApproach - vfr pattern - base turn
Reason for occurrence undeterminedCause
Maintenance,annual inspection - overdueOwner/builder
Forced landingDescent - emergency
In flight collision with objectLanding
Object - antennaFactor
Inadequate training(emergency procedure(s))Owner/builderFactor

Analysis

The student pilot had been doing touch and go landings when the airplane's engine lost power during the turn to base leg at an altitude of 300 feet AGL. On final, the airplane collided with the top of the localizer antenna located at the end of the runway. Although no mechanical reason could be found for the loss of engine power, the student pilot stated that one of the characteristics of a two cycle engine is to 'loadup' after an extended time at idle power. The last conditon inspection was completed in 1991. The student pilot's airman class 3 medical certificate/student pilot certificate had expired and had not been endorsed for solo flight.

Factual narrative

On June 25, 1995, at 1930 eastern daylight time, a Kolb Twinstar, N7165L, collided with a localizer antenna during an emergency landing at Virginia Highland Airport, Abingdon, Virginia. The student pilot was not injured and the aircraft was destroyed. The aircraft was being operated as a personal flight under 14 CFR Part 91 when the accident occurred. Visual meteorological conditions prevailed at the time and no flight plan had been filed.

According to a Federal Aviation Administration (FAA) Inspector, the student pilot had taken off at 0910 from Virginia Highland Airport and had been doing touch and go landings when the two cycle engine lost power. The pilot stated he had just completed his turn to base leg at an altitude of approximately 300 feet, when the engine lost power. The pilot stated that one of the characteristics of a two cycle engine was to "loadup" after an extended time at idle power. The pilot decided he had sufficient altitude and would utilize the same traffic pattern to the runway. He thought he had made it to the runway when the airplane hit the top of the localizer antenna and flipped.

The student pilot's airman class 3 medical certificate/student pilot certificate expired in August 1994, and had no signature for solo flight. The student pilot's logbook had no endorsements for dual instruction received. The student pilot stated, "he had not received dual instruction, but, had two flights with a friend in an airplane just like mine." The pilot did not know if the airplane had an engine out best glide airspeed.

The experimental aircraft was assembled by the owner/builder student pilot without assistance or verification of the work completed. The last annual condition inspection was recorded on 8/10/91.

Aircraft

Registration
N7165L
Reported as
Kolb Twinstar
Category
Airplane, amateur-built
Serial number
TS-242
Airframe hours
345
Engine
Rotax 503, 46 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Fricker, Roy N
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Continuous airworthiness · February 20, 1994 · 45 hours before
Airport
VJI · Virginia Highlands Arpt, runway 6, 4,470 × 75 ft, asphalt

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
51
Medical
Class 3, Expired
Seat
Left
Flight hours
345 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
170° at 4 knots
Visibility
7 statute miles
Lowest ceiling
12,000 ft broken
Temperature
77 °F, dew point 70 °F
Altimeter
29.00 inHg
Observed at
TRI

FAA reports on this event · 1

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