- Date
- January 15, 1997, 15:00 local (19:00 UTC)
- Place
- Anchorage, AK
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N62905Hefty Polar CUB
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 21, 1998
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19970115001219A
- Case key
- 2961
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The NTSB’s determination of the probable cause, and any contributing factors.
failure of the pilot to maintain sufficient altitude/clearance from a snow berm during the landing. The snow berm and flat light conditions were related factors.
Analysis
The pilot and a passenger were landing on a frozen lake at the conclusion of a cross-country flight. The pilot reported that overcast clouds and flat lighting conditions prevented him from seeing an approximate 3 feet high snow berm at the approach end of the landing area. The berm resulted from snow plowing operations to create an ice skating area on the lake. During the landing flare, the landing gear skis struck the top of the berm. The airplane came to rest on the ice and received damage to the landing gear and right wing lift strut.
Factual narrative
On January 15, 1997, about 1500 Alaska standard time, a ski equipped experimental homebuilt, Curt Hefty, Polar Cub, N62905, crashed during landing on a frozen lake in Anchorage, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country personal flight when the accident occurred. The airplane, registered to and operated by the pilot, sustained substantial damage. The certificated private pilot and the sole passenger were not injured. Visual meteorological conditions prevailed. The flight originated from Big Lake, Alaska, about 1430.
In a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on January 16, 1997, at 0835, the pilot reported he was landing toward the south on Jewel Lake. Overcast clouds and flat lighting conditions prevented him from seeing about a 3 feet high snow berm at the approach end of the landing area. The berm resulted from snow plowing operations to create an ice skating area on the lake. During the landing flare, the landing gear skis struck the top of the berm. The airplane came to rest on the ice and received damage to the landing gear and right wing lift strut.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Aircraft
- Registration
- N62905
- Reported as
- Hefty Polar CUB
- Category
- Airplane, amateur-built
- Serial number
- 0001
- Engine
- Continental C-90-F, 90 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- James C. Hefty
- Airworthiness certificate
- Special, Experimental (Special)
- Departed
- Big Lake, AK
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
- 56
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Front
- Flight hours
- 2,000 total · 1,500 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 30 statute miles
- Lowest ceiling
- 5,000 ft overcast
- Temperature
- 30 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N62905 · 1
Matched to the same aircraft by N-number and date.