MIA08CA136

NTSB accident investigation · Schleicher ASK-21 · Elmira, NY · July 7, 2008

Accident · No injuriesData collectionFinal report
Date
July 7, 2008, 14:00 local (18:00 UTC)
Place
Elmira, NY
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N363KSSchleicher ASK-21
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2008
Report
Approved by Office Director
Parties
FAA/FSDO
Case key
68394

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 glider pilot's misjudged distance/altitude while soaring.

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.

Temp/humidity/pressure: thermal liftingEnvironmental issues › Conditions/weather/phenomena · Not specifiedSchleicher ASK-21: 1 caseAll aircraft: 53 cases
Performance/control parameters: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedSchleicher ASK-21: 1 caseAll aircraft: 809 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 stated that after his Schleicher ASK-21 glider was towed aloft to 2,000 feet and released, he flew too far from the airport traffic pattern. He said that during the return to the airport, he encountered a "sink and waterfall" effect, which caused a low approach, resulting in his inability to make it to the airport. Subsequently, there was a collision with terrain 100 feet short of the runway. The pilot added that there were no deficiencies with the performance and handling of the glider.

Factual narrative

The pilot stated that after his Schleicher ASK-21 glider was towed aloft to 2,000 feet and released, he flew too far from the airport traffic pattern. He said that during the return to the airport, he encountered a "sink and waterfall" effect, which caused a low approach, resulting in his inability to make it to the airport. Subsequently, there was a collision with terrain 100 feet short of the runway. The pilot added that there were no deficiencies with the performance and handling of the glider.

Aircraft

Registration
N363KS
Reported as
Schleicher ASK-21
Category
Glider
Serial number
21228
Airframe hours
5,011
Engine
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Harris Hill Soaring Corporation
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 1, 2007 · 76 hours before
Departed
4NY8 · Elmira, NY
Destination
4NY8 · Elmira, NY
Airport
4NY8 · Harris Hill, runway 16, 1,115 × 150 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
64
Injuries
None
Certificate
Commercial
Seat
Front
Flight hours
491 total · 481 in this make and model · 4 in the last 90 days · 4 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
240° at 11 knots
Visibility
7 statute miles
Temperature
81 °F, dew point 64 °F
Altimeter
29.89 inHg
Observed at
ELM, 2 nm away