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ASN Wikibase Occurrence # 232811
Last updated: 5 August 2020
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Date:06-FEB-2020
Time:12:30
Type:Silhouette image of generic C172 model; specific model in this crash may look slightly different
Cessna 172F Skyhawk
Owner/operator:Private
Registration: N817PS
C/n / msn: 17252705
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Category:Accident
Location:ca 20 mi SE of Palmer, Knik Glacier, AK -   United States of America
Phase: En route
Nature:Private
Departure airport:Anchorage-Merrill Field, AK (MRI/PAMR)
Destination airport:Anchorage-Merrill Field, AK (MRI/PAMR)
Investigating agency: NTSB
Narrative:
According to the pilot, while conducting a low-altitude pass over a frozen, snow-covered lake in his wheel-equipped airplane, he misjudged the airplane's height above the lake. The landing gear contacted snow, and subsequently, the left wing and propeller struck the ground, and the airplane came to rest upright. The left wing sustained substantial damage. The pilot reported there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot added that the accident may have been prevented if he had done a better job of evaluating the flight scenario and had properly addressed the risks involved with low-level flight over a snow-covered landscape, including the importance of recognizing visual illusions and depth perception issues associated with those conditions.

Probable Cause: The pilot's failure to maintain clearance from snow-covered terrain while maneuvering at low altitude.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20200210X11725&key=1
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N817PS

Accident investigation:
cover
  
Investigating agency: NTSB
Status: Investigation completed
Duration: 6 months
Download report: Final report


Revision history:

Date/timeContributorUpdates
07-Feb-2020 06:39 gerard57 Added
07-Feb-2020 08:20 RobertMB Updated [Time, Location, Phase, Source, Narrative]
07-Feb-2020 15:39 TB Updated [Aircraft type, Operator, Location]
10-Feb-2020 14:59 RobertMB Updated [Time, Aircraft type, Registration, Cn, Operator, Source, Damage, Narrative]
10-Feb-2020 15:20 RobertMB Updated [Operator, Narrative]
20-Feb-2020 10:07 Captain Adam Updated [Narrative]
05-Aug-2020 08:00 ASN Update Bot Updated [Time, Operator, Departure airport, Destination airport, Source, Narrative, Accident report, ]
05-Aug-2020 08:25 harro Updated [Departure airport, Destination airport, Source, Narrative, Accident report, ]

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