- Date
- April 25, 2004, 17:45 local (Apr 26, 2004, 01:45 UTC)
- Place
- Skwentna, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4861DCessna 182A
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 24, 2005
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Parties
- FAA, Anchorage Flight Standards District Office
- FAA report
- 20040425009599A
- Case key
- 59125
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 pilot's selection of an unsuitable landing site, which resulted in a nose over during the landing roll.
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.
Analysis
The private pilot reported he was landing at a private airstrip near a cabin. He said he flew over the airstrip to see if it was suitable for his wheel-equipped airplane. He noted what he thought was the gravel surface of the runway showing through patchy snow, and ruts in the snow as if made by landing airplanes. During the subsequent landing roll, the airplane's wheels sank in deep snow, and the airplane nosed over. The pilot stated that after the accident, he discovered that black cinders had been spread on the runway to expedite the melting of the snow, and it was the cinders he saw from the air, not the gravel runway surface.
Factual narrative
On April 25, 2004, about 1745 Alaska daylight time, a wheel-equipped Cessna 182A airplane, N4861D, sustained substantial damage when it nosed over while landing in deep snow at a private airstrip, about 12 miles west of Skwentna, Alaska. The solo private pilot/airplane owner was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the 14 CFR Part 91 local personal flight. The flight departed Merrill Field, Anchorage, Alaska, about 1700.
During a telephone conversation with the NTSB investigator-in-charge (IIC) on April 26, the pilot reported he was landing at a private airstrip near a friend's cabin. He said he flew over the runway, and observed what appeared to be a gravel surface showing through patchy snow, and ruts in the snow as if made by airplanes using the airstrip. He indicated that he felt it safe to land, but during the landing roll, the airplane's tires sank in deep snow, and the airplane nosed over, receiving structural damage to the wings, fuselage, and empennage. The pilot said that after the accident, he discovered that black cinders had been spread on the runway surface to expedite the melting of the snow, and it was the cinders he saw, not the gravel surface of the runway.
The pilot did not complete the NTSB Pilot/Operator Aircraft Accident Report (NTSB form 6120.1) as requested by the NTSB IIC.
Aircraft
- Registration
- N4861D
- Reported as
- Cessna 182A
- Category
- Airplane
- Serial number
- 34961
- Engine
- Continental O-470, 230 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Robert K. Thornquist
- Airworthiness certificate
- Standard, Normal
- Departed
- MRI · Anchorage, AK
- Destination
- Skwentna, 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
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Unknown, Unknown
- Seat
- Left
Weather
- Conditions
- Visual (VMC) · Day
- Visibility
- 30 statute miles
- Lowest ceiling
- None
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 N4861D · 1
Matched to the same aircraft by N-number and date.