No fatalities

8 Oct 2009: CESSNA 180 — MASLEN HOLBROOK — Pistol Creek, ID

Pistol Creek, ID, United States

On 8 Oct 2009, a CESSNA 180 operated by MASLEN HOLBROOK was involved in an aviation accident near Pistol Creek, ID. No fatalities were reported. Investigators recorded the probable cause as: The separation of one of the airplane's main landing gear legs during landing in variable gusting wind conditions, due to the nut being stripped from the attachment bolt. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

During landing on a remote dirt/grass strip with gusty winds, the right main gear leg separated from its mount after touchdown, causing substantial wing damage. Investigation found a stripped nut on the attachment bolt.

Incident Overview

A pilot was landing at a remote airstrip with a dirt and grass surface. The wind conditions were gusty and variable in direction, demanding careful control inputs. The touchdown itself was uneventful and considered normal. As the pilot applied rudder and brake to maintain directional control during the landing roll, the right main landing gear leg separated from its mounting structure. This loss of support caused the right wing to drop and contact the terrain, resulting in substantial damage to the wing.

Mechanical Examination

Post-accident inspection of the gear leg attachment hardware revealed that the nut securing the gear leg attachment bolt had been stripped from the bolt. This stripping allowed the bolt to work its way out of the attachment structure, leading to the separation of the gear leg from its mounting point.

Pilot Account Variation

In an initial telephone conversation with the NTSB Investigator-In-Charge, the pilot stated that the right brake had failed during the landing roll. However, in a follow-up interview, the pilot changed his account, saying he believed the brake was functioning correctly until the moment the gear leg detached. No further information was provided regarding the discrepancy.

Contributing factors

Causes

Main landing gear attach sec — Failure

Other contributing factors

Effect on operation