GENERAL INFORMATION FOR NTSB REPORT: ANC00LA044
Data Source NTSB AVIATION ACCIDENT/INCIDENT DATABASE
NTSB Report Nbr ANC00LA044
Event Id 20001212X20749
Local Date 04/13/2000
Local Time 1430
State AK
Event Type ACCIDENT
Injury Severity NONE
Record Status
Mid Air Collision NO
Event Location OFF AIRPORT/AIRSTRIP

WEATHER INFORMATION
Weather Briefing Complete FULL
Basic Weather Conditions VISUAL METEOROLOGICAL COND
Light Condition DAY
Cloud Condition UNKNOWN
Cloud Height above Ground Level (ft) 0
Ceiling Height above Ground Level (ft) 5000
Cloud Type BROKEN
Visibility RVR (ft) 0
Visibility RVV (sm) 0
Visibility (sm) 10
Wind Direction (deg) 80
Wind Condition Flag U
Wind Speed (knots) 20
Wind Condition Indicated Unknown

AIRCRAFT INFORMATION
Aircraft 1
Type of Operation PART 91: GENERAL AVIATION
Registration Number N2790C
Aircraft Make CESSNA
Aircraft Model 170
Aircraft Series B
Aircraft Damage SUBSTANTIAL
Aircraft Fire NONE
Aircraft Explosion NONE
Aircraft Type AIRPLANE
Aircraft Homebuilt UNKNOWN
Phase of Flight UNDEFINED
Aircraft Use PERSONAL
Flight Plan Filed NONE
Operator Name
Operator Doing Business As
Owner Name TIMOTHY R. SHARP
Number of Seats 4
Number of Engines 1
ELT Installed YES
ELT Operated YES
Departure Airport Id IGG
Departure City IGIUGIG
Departure State ALASKA
Last Departure Point NO
Destination Local CRASH AT DESTINATION CITY
Destination Airport Id
Destination City
Runway Id 0
Air Carrier Operating Certificates NO
Air Carrier Other Operating Certificates UNKNOWN
Rotocraft/Agriculture Operating Certificate UNKNOWN
Cert Max Gross Wgt 2200

ENGINE INFORMATION

Aircraft 1 - Engine : #1
Engine Manufactuer Lycoming
Engine Model O-320-B3R
Engine Horsepower 160
Engine Thrust LBS
Carb/Injection CARBURETOR

INJURY INFORMATION
Injury Summary for Aircraft 1
Fatal Serious Minor None
Crew 0 0 0 0
Pass 0 0 0 0
Total 0 0 0 2
Sequence of Events for Aircraft 1
Occurrence #1
IN FLIGHT ENCOUNTER WITH WEATHER
Phase of Operation: TAKEOFF - INITIAL CLIMB

Events Sequence for Occurrence #1 of Aircraft 1
Event Seq # Event Group Code Subject Modifier Personnel Cause/Factor
1 1 WEATHER CONDITION CROSSWIND FACTOR
2 1 WEATHER CONDITION VARIABLE WIND FACTOR
3 2 COMPENSATION FOR WIND CONDITIONS INADEQUATE PILOT IN COMMAND FACTOR
4 2 FLIGHT INTO KNOWN ADVERSE WEATHER INTENTIONAL PILOT IN COMMAND CAUSE

Occurrence #2
IN FLIGHT COLLISION WITH TERRAIN/WATER
Phase of Operation: TAKEOFF - INITIAL CLIMB

Events Sequence for Occurrence #2 of Aircraft 1
Event Seq # Event Group Code Subject Modifier Personnel Cause/Factor
5 1 TERRAIN CONDITION SNOW COVERED




AIRCRAFT 1 PRELIMINARY REPORT


On April 13, 2000, about 1430 Alaska daylight time, a wheel equipped Cessna 170B airplane, N2790C, sustained substantial damage during takeoff from a remote site, about 15 miles northwest of Igiugig, Alaska, at latitude 59 degrees, 32 minutes north, and longitude 156 degrees, 10 minutes west. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The certificated private pilot, and the one passenger aboard, were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated about 0800, at Merrill Field, Anchorage, Alaska. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on April 14, the pilot reported that he was attempting a southeasterly departure from an 800 feet long sand bar. He stated that the takeoff run required a correction for a strong left crosswind. During the takeoff run, as the airplane became airborne, a strong gust of wind pushed the airplane to the right, and over an area of soft snow. He said that when the wind decreased, the airplane's main wheels contacted the soft snow, and the airplane nosed over. The airplane sustained substantial damage to the wings and fuselage. The pilot reported wind conditions at the time of the accident to be from the east at 20 knots, with peak gusts to 40 knots.

AIRCRAFT 1 FINAL REPORT


The certificated private pilot was attempting a southeasterly departure from an 800 feet long sand bar. He stated that the takeoff run required a correction for a strong left crosswind. During the takeoff run, as the airplane became airborne, a strong gust of wind pushed the airplane to the right, and over an area of soft snow. He said that when the wind decreased, the airplane's main wheels contacted the soft snow, and the airplane nosed over. The airplane sustained substantial damage to the wings and fuselage. The pilot reported wind conditions at the time of the accident to be from the east at 20 knots, with peak gusts to 40 knots.

AIRCRAFT 1 CAUSE REPORT


The pilot's intentional flight into known adverse weather. Factors associated with the accident were the variable crosswind conditions, and the pilot's inadequate compensation for those wind conditions.


END REPORT