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NTSB Report
June 24, 2007 · Grumman G21A · N7811
Dutch Harbor, AK
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
June 24, 2007
Injury Outcomes
No injuries (2 uninjured)
Location
Dutch Harbor, AK
Aircraft
Grumman G21A
Tail Number
N7811
Operator
Penair
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC07CA053
The pilot had dropped off passengers, and was taking off to return to the base airport under Title 14, CFR Part 91, when the accident occurred. The pilot said he was departing on a hard surface runway in an amphibious, tailwheel equipped airplane. He said after the tailwheel lifted off, he believed a quartering gust of tailwind pushed the airplane off the runway. He said he tried to maintain directional control, but the airplane's right main landing gear encountered a tundra mound, and the airplane nosed over. The pilot said the right wing separated from the airplane during the accident. There were no known mechanical anomalies with the airplane prior to the accident.
NTSB Probable Cause
The pilot's inadequate compensation for wind conditions during the takeoff roll, which resulted in a loss of directional control and a nose over.
Full Narrative
The pilot had dropped off passengers, and was taking off to return to the base airport under Title 14, CFR Part 91, when the accident occurred. The pilot said he was departing on a hard surface runway in an amphibious, tailwheel equipped airplane. He said after the tailwheel lifted off, he believed a quartering gust of tailwind pushed the airplane off the runway. He said he tried to maintain directional control, but the airplane's right main landing gear encountered a tundra mound, and the airplane nosed over. The pilot said the right wing separated from the airplane during the accident. There were no known mechanical anomalies with the airplane prior to the accident.
Flight
Event TypeAccident
Event Time15:00 AKDT
Nearest AirportDriftwood Bay (0nm)
Runway30
Flight Plan FiledVFR
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman G21A
Tail NumberN7811
Aircraft CategoryAir
DamageSubstantial
OperatorPenair
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsCovington · R-985-AN-14B · Reciprocating · 450
Seats8
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 50 · First Class · None
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 15 kt, gusting 20 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point57 / 46
Altimeter29.95 inHg
Weather SourcePILO