No fatalities

Tailwheel Aircraft Damaged After Landing Gear Failure (N425AH)

Boscobel, WI, US

On August 20, 2005, a Piper PA-12 (registration N425AH) was involved in an aviation accident near Boscobel, WI. No fatalities were reported. Investigators recorded the probable cause as: The separation of the right main landing gear attachment bracket bolt during the landing and the pilot's aircraft control not possible with the collapsed gear. 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 tailwheel airplane piloted by a certified flight instructor sustained substantial damage when the right main landing gear broke during landing on runway 20.

Incident Overview

A tailwheel airplane, operated by a certified flight instructor, experienced a landing gear failure during landing, resulting in substantial damage to the aircraft. The pilot reported that after touching down on the hard surface of runway 20, the airplane began a mild left turn toward the grass alongside the runway.

Sequence of Events

According to the flight instructor, a bolt on the right main landing gear attach bracket had broken. Consequently, the right gear folded under the airplane at a speed of approximately 15 mph. The gear then broke, causing the aircraft to lift about 5 feet into the air before falling back to the ground. The propeller struck and became embedded in the ground, and the wing sustained damage with bending outboard from the fuselage.

Damage and Injuries

The aircraft sustained substantial damage as a result of the impact with terrain. The pilot reported no injuries.

Additional Details

The specific model and registration of the tailwheel airplane were not provided. The incident occurred during landing on runway 20.

Frequently asked questions

What happened in the 20 Aug 2005 Piper PA-12 accident near Boscobel, WI?

A tailwheel airplane piloted by a certified flight instructor sustained substantial damage when the right main landing gear broke during landing on runway 20.

Were there any fatalities in the 20 Aug 2005 Piper PA-12 accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 20 Aug 2005 involved a Piper PA-12, registration N425AH, at Boscobel, WI.

What was the probable cause of the accident?

The separation of the right main landing gear attachment bracket bolt during the landing and the pilot's aircraft control not possible with the collapsed gear.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20050901X01361. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.