ERA11CA279

NTSB accident investigation · Franke Harry C Avid Flyer B · Somerset, PA · April 30, 2011

Accident · No injuriesData collectionFinal report
Date
April 30, 2011, 13:45 local (17:45 UTC)
Place
Somerset, PA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N145HFFranke Harry C Avid Flyer B
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed · report August 30, 2011
Report
Approved by Office Director
NTSB office
Eastern Region Aviation
Parties
FAA-FSDO
FAA report
20110430019089A
Case key
79028

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 pilot’s failure to hold full power for takeoff.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Personnel issuesPersonnel issues › Action/decision · PilotFranke Harry C AVID FLYER B: 1 caseAll aircraft: 56 casesProbable cause
Engine controls: power leverAircraft › Aircraft power plant · Incorrect use/operationFranke Harry C AVID FLYER B: 1 caseAll aircraft: 95 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot said that he conducted a preflight inspection and engine run up, and no anomalies were noted. At 65 feet above ground level on the initial climb, the engine experienced a loss of engine power. He lowered the nose and performed a forced landing, but the airplane touched down hard which resulted in substantial damage to the fuselage. The pilot stated that there were no mechanical failures or malfunctions with the airplane. He said that the accident could have been prevented if he had tightened the throttle friction which accidentally rolled the power back to the idle position during the initial climb.

Factual narrative

The pilot stated that he conducted a preflight inspection and a ground run up prior to the flight. There were no discrepancies noted then, with the takeoff, and initial climb. When the airplane reached approximately 65 feet above the ground, just over the asphalt end section of the runway, he leveled off the climb and raised the flaps. Suddenly, the engine, "quit", had a loss of power. The pilot lowered the nose of the airplane and attempted to level off before landing but hit the ground hard, collapsing the main gears, which resulted in substantial damage to the fuselage structure. He and the passenger exited the airplane unharmed. Later the pilot realized and confirmed that the friction lock on the engine throttle was not engage correctly resulting in the throttle to roll back to the idle position.

Aircraft

Registration
N145HF
Reported as
Franke Harry C Avid Flyer B
Category
Airplane, amateur-built
Serial number
296
Airframe hours
250
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · July 19, 2010
Departed
2G9 · Somerset, PA
Destination
2G9 · Somerset, PA
Airport
2G9 · Somerset County Airport, runway 14, 2,695 × 204 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
67
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot
Last flight review
May 27, 2010
Seat
Right
Flight hours
145 total · 135 in this make and model · 0 in the last 90 days · 0 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
55 °F, dew point 32 °F
Altimeter
30.15 inHg
Observed at
KJST, 19 nm away

Docket · 2

The files NTSB released with the investigation on June 28, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 596 KB in all.

FAA reports on this event · 1

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