CEN09CA577

NTSB accident investigation · Ketonen Schreder · Ionia, MI · September 5, 2009

Accident · No injuriesData collectionFinal report
Date
September 5, 2009, 13:30 local (17:30 UTC)
Place
Ionia, MI
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N161HPKetonen Schreder
Defining event
Takeoff: Glider tow event
Weather
Visual (VMC) · Day
Status
Completed · report December 29, 2009
Report
Approved by Office Director
NTSB office
Central Region
Parties
FAA-Grand Rapids FSDO
FAA report
20090905049079A
Case key
74712

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 failed to maintain control of the glider during the aero-tow launch.

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.

Performance/control parametersAircraft › Aircraft oper/perf/capability · Not attained/maintainedKetonen Eric SCHREDER HP-16: 1 caseAll aircraft: 1,269 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 reported that the amateur-built glider was a few feet higher than it should be in relation to the tow airplane after liftoff, so he attempted to lower the glider. He expected the ground effect to slow his descent rate, but the glider continued to descend. He put in aft stick but the wheel contacted the turf at the same time. The glider then bounced and he put in forward stick pressure. The glider hit the runway hard and the pilot released the tow line. The inspection of the aircraft revealed that the glider’s fuselage had separated from the forward section of the glider during the hard landing resulting in substantial damage. The pilot reported that there was no mechanical malfunction or failure of the aircraft prior to the occurrence.

Factual narrative

The pilot reported that the amateur-built glider was a few feet higher than it should be in relation to the tow airplane after liftoff, so he attempted to lower the glider. He expected the ground effect to slow his descent rate, but the glider continued to descend. He put in aft stick but the wheel contacted the turf at the same time. The glider bounced and he put in forward stick pressure. The glider hit the runway hard and the pilot released the tow line. The inspection of the aircraft revealed that the glider’s fuselage had separated from the forward section of the glider during the hard landing resulting in substantial damage. The pilot reported that there was no mechanical malfunction or failure of the aircraft prior to the occurrence.

Aircraft

Registration
N161HP
Reported as
Ketonen Schreder
Category
Glider, amateur-built
Serial number
EAK03
Airframe hours
561
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Cadillac Soaring LLC
Registered owner
Cadillac Soaring LLC
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Condition · July 20, 2009
Departed
Y70 · Ionia, MI
Destination
Y70 · Ionia, MI
Airport
Y70 · Ionia County Airport, runway 09, 4,300 × 150 ft

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
54
Injuries
None
Certificate
Private
Flight hours
67 total · 3 in this make and model

Weather

Conditions
Visual (VMC) · Day

Docket · 1

The files NTSB released with the investigation on October 22, 2009, on NTSB’s docket system: statements, records, photos and specialists’ reports. 544 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.