No fatalities

Student Pilot Loses Wheel and Experiences Landing Gear Collapse After Tire Change (N92793)

Nikiski, AK, US

On April 18, 1997, a Piper PA-12 (registration N92793) was involved in an aviation accident near Nikiski, AK. No fatalities were reported. Investigators recorded the probable cause as: the pilot's improper installation of the landing gear wheel. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A student pilot practicing takeoffs and landings lost a wheel after replacing skis with tundra tires. After landing, the main gear collapsed, damaging the wing.

Incident Details

A solo student pilot was practicing takeoffs and landings in an airplane that had previously been equipped with fixed skis. The pilot removed the skis and replaced them with large tundra tires. During the flight, the pilot landed at an intermediate airport and attempted to turn the airplane to the left in preparation for departure. The airplane was difficult to turn, so the pilot exited the aircraft and physically moved the tail to position the airplane for takeoff.

After liftoff, the pilot noticed the left wheel and tire fall off the axle. Despite this, the pilot continued to the destination and landed on a gravel runway at a private airstrip. Following touchdown, the right main landing gear collapsed, folding under the wheel.

Inspection Findings

An inspection of the airplane revealed that the left wheel axle retaining nut was missing. The aircraft sustained damage to the main landing gear, the right wing spar, and the right wing lift struts.

Frequently asked questions

What happened in the 18 Apr 1997 Piper PA-12 accident near Nikiski, AK?

A student pilot practicing takeoffs and landings lost a wheel after replacing skis with tundra tires. After landing, the main gear collapsed, damaging the wing.

Were there any fatalities in the 18 Apr 1997 Piper PA-12 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 18 Apr 1997 involved a Piper PA-12, registration N92793, at Nikiski, AK.

What was the probable cause of the accident?

the pilot's improper installation of the landing gear wheel.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X07643. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.