GENERAL INFORMATION FOR NTSB REPORT: ANC00LA047
Data Source NTSB AVIATION ACCIDENT/INCIDENT DATABASE
NTSB Report Nbr ANC00LA047
Event Id 20001212X20752
Local Date 04/16/2000
Local Time 1100
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 CLEAR
Cloud Height above Ground Level (ft) 0
Ceiling Height above Ground Level (ft) 0
Cloud Type NONE
Visibility RVR (ft) 0
Visibility RVV (sm) 0
Visibility (sm) 50
Wind Direction (deg) 180
Wind Condition Flag U
Wind Speed (knots) 10
Wind Condition Indicated Unknown

AIRCRAFT INFORMATION
Aircraft 1
Type of Operation PART 91: GENERAL AVIATION
Registration Number N3697M
Aircraft Make PIPER
Aircraft Model PA12
Aircraft Series NO SERIES EXISTS
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 RICHARD W. FLANDERS
Number of Seats 2
Number of Engines 1
ELT Installed YES
ELT Operated NO
Departure Airport Id FAI
Departure City FAIRBANKS
Departure State ALASKA
Last Departure Point NO
Destination Airport Id 11AK
Destination City DELTA JUNCTION
Destination State ALASKA
Runway Id 0
Air Carrier Operating Certificates NO
Air Carrier Other Operating Certificates UNKNOWN
Rotocraft/Agriculture Operating Certificate UNKNOWN
Cert Max Gross Wgt 1750

ENGINE INFORMATION

Aircraft 1 - Engine : #1
Engine Manufactuer Lycoming
Engine Model O-320-A2B
Engine Horsepower 150
Engine Thrust HP
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 COLLISION WITH TERRAIN/WATER
Phase of Operation: APPROACH

Events Sequence for Occurrence #1 of Aircraft 1
Event Seq # Event Group Code Subject Modifier Personnel Cause/Factor
1 2 ALTITUDE/CLEARANCE NOT MAINTAINED PILOT IN COMMAND CAUSE
2 1 LIGHT CONDITION OTHER FACTOR
3 1 TERRAIN CONDITION SNOW COVERED FACTOR

Occurrence #2
GEAR COLLAPSED
Phase of Operation: LANDING

Events Sequence for Occurrence #2 of Aircraft 1
Event Seq # Event Group Code Subject Modifier Personnel Cause/Factor




AIRCRAFT 1 PRELIMINARY REPORT


On April 16, 2000, about 1100 Alaska daylight time, a ski equipped Piper PA-12 airplane, N3697M, sustained substantial damage while landing at an off airport site, about 23 miles southwest of Delta Junction, Alaska, at 63 degrees 24 minutes north latitude, 146 degrees 21 minutes west longitude. The certificated private pilot, and the one passenger aboard, were not injured. The airplane was being operated as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. Visual meteorological conditions prevailed, and no flight plan was filed. The flight originated about 1000, from the Fairbanks International Airport, Fairbanks, Alaska. During a telephone conversation with the National Transportation Safety Board investigator-in-charge on April 19, the pilot reported that during approach to land on a large, featureless, and snow-covered glacier, he momentarily lost visual reference due to flat light conditions. He said that he was unable to judge his descent rate, and the airplane's right ski struck the surface of the glacier. The right main landing gear collapsed, and the right wing struck the surface of the glacier. The airplane sustained substantial damage to the right wing, and fuselage. The pilot said that there were no preaccident mechanical anomalies with the airplane.

AIRCRAFT 1 FINAL REPORT


The certificated private pilot reported that while on approach to land on a large, featureless, and snow-covered glacier, he momentarily lost visual reference due to flat light conditions. He said that he was unable to judge his descent rate, and the airplane's right ski struck the surface of the glacier. The right main landing gear collapsed, and the right wing struck the surface of the glacier. The pilot said that there were no preaccident mechanical anomalies with the airplane.

AIRCRAFT 1 CAUSE REPORT


The pilot's failure to maintain altitude/clearance. Factors associated with the accident were flat light conditions, and snow-covered terrain.


END REPORT