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NTSB Report
January 29, 2011 · Miller Gregory Scott GOT Rocks · N9015U
Anchorage, AK
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
January 29, 2011
Injury Outcomes
No injuries (2 uninjured)
Location
Anchorage, AK
Aircraft
Miller Gregory Scott GOT Rocks
Tail Number
N9015U
Operator
John Henry Swan
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC11CA011
The pilot said that he was attempting a touch-and-go landing in a ski-equipped airplane on a snow-covered mountaintop site, which was surrounded by higher mountains. Before beginning his approach to the site, he determined the wind conditions, and then planned an easterly approach into a 10-mph headwind. After landing, he turned the airplane to the north in preparation for takeoff and, as it passed out of a wind-protected area, a strong southerly wind lifted the airplane's tail. The pilot was unable to control the airplane in the strong wind and it nosed over, sustaining substantial damage to the wings and empennage. The pilot reported that there were no preaccident mechanical anomalies with the airplane.
NTSB Probable Cause
Environmental issues-Physical environment-Terrain-Mountainous/hilly terrain-Contributed to outcome
Full Narrative
The pilot said he was attempting a touch-and-go landing in a ski-equipped airplane on a snow-covered mountaintop site, which was surrounded by higher mountains. Before beginning his approach to the site, he determined the wind conditions, and then planned an easterly approach into a 10 mph headwind. After landing, he turned the airplane to the north in preparation for takeoff, and as it passed out of a wind-protected area, a strong southerly wind lifted the airplane's tail. The pilot was unable to control the airplane in the strong wind, and it nosed over, sustaining substantial damage to the wings and empennage. The pilot reported that there were no preaccident mechanical anomalies with the airplane.
Flight
Event TypeAccident
Event Time14:30 AKST
Nearest Airport0nm
Runway33
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMiller Gregory Scott GOT Rocks
Tail NumberN9015U
Aircraft CategoryAir
DamageSubstantial
OperatorJohn Henry Swan
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-C1A · Reciprocating · 180
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 46 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 46 kt, gusting 57 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point21 C / 0 C
Altimeter0
Weather SourcePILO