On April 15, 2000, a Piper J3C-65 (registration N88472) was involved in an aviation accident near Anchorage, AK. Investigators recorded the probable cause as: The pilot's failure to maintain adequate clearance over the frozen surface during landing, which resulted in the main landing gear breaking through a frozen puddle and the airplane nosing over. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A private pilot lost control during landing on a frozen mud flat when the main gear broke through ice, causing the aircraft to nose over and sustain substantial damage.
What happened
The certificated private pilot was operating an aircraft while attempting to land on a frozen mud flat. During the landing roll, the main landing gear wheels encountered a large frozen puddle. The force of the impact caused the wheels to break through the ice surface. This sudden loss of support resulted in the airplane nosing over.
The investigation
Post-accident examination revealed substantial damage to the airframe. The left wing lift struts, the vertical stabilizer, and the rudder were all damaged. The pilot reported that there were no preaccident mechanical problems with the airplane prior to the event.
Findings
The primary factor in this accident was the frozen mud flat surface condition. The main landing gear wheels breaking through the frozen puddle directly led to the nose-over. No mechanical failures were identified as contributing factors.
Probable cause
The pilot's failure to maintain adequate clearance over the frozen surface during landing, which resulted in the main landing gear breaking through a frozen puddle and the airplane nosing over.
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