Casualties unknown

2003-09-25: Cessna 170A (N9006A) — Skwentna, AK

Skwentna, AK, US

On September 25, 2003, a Cessna 170A (registration N9006A) was involved in an aviation accident near Skwentna, AK. Investigators recorded the probable cause as: An overload failure of the axle retaining nut/bolt assembly, which resulted in the separation of the axle/wheel assembly, and subsequent collapse of the right main landing gear strut during the landing roll. 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 1781061362Data APIEditorial standards

During landing on a remote 1,000-foot gravel strip, the right main landing gear collapsed. The pilot later discovered stripped nuts on axle bolts, and after waiting a day, set the airplane on fire due to economic infeasibility of recovery.

Accident Overview

A commercial certificated pilot was landing on a remote gravel area measuring approximately 1,000 feet long and 30 feet wide. During the landing roll, the airplane's right main landing gear suddenly collapsed. As the airplane slid on the gravel, the right gear strut was torn out of the fuselage, resulting in additional damage to the fuselage and right wing.

Post-Accident Examination

After the accident, the pilot examined the right gear strut and discovered that the right axle and wheel assembly were missing from the outboard end of the gear strut. A subsequent search located the wheel assembly, revealing that the nuts used to secure the attaching axle bolts to the gear strut were stripped from their respective bolts.

Pilot Actions and Outcome

The pilot decided to wait until the next day before activating the airplane's emergency locator transmitter. He further decided to destroy the airplane by setting it on fire, citing that it would have been economically unfeasible to pay for repairs and helicopter transportation charges to remove the airplane from its remote location. The airplane was observed by search personnel as having burned.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20031001X01640. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.