Casualties unknown

1985-04-16: Cessna 177 (N1217M) — Chinle, AZ

Chinle, AZ, US

On April 16, 1985, a Cessna 177 (registration N1217M) was involved in an aviation accident near Chinle, AZ. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during the landing rollout due to strong gusting winds, which resulted in the right main landing gear striking a runway light. 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

A gust of wind from the right front quarter caused an aircraft to weather-vane during landing, resulting in the right main gear striking a runway light and folding up.

What happened

The aircraft touched down on runway 17 under windy conditions. Wind data indicated a direction from 220 degrees with gusts reaching speeds between 30 and 35 knots. As the pilot navigated past a Quonset hangar, the aircraft encountered a sudden gust of wind originating from the right front quarter.

This crosswind component caused the aircraft to weather-vane sharply into the wind direction. The pilot reported being unable to correct the resulting turn despite immediate control inputs. During this uncontrolled maneuver, the right main landing gear struck a runway light fixture. The impact force caused the gear assembly to fold upward, halting normal forward motion and bringing the flight to an abrupt end.

The investigation

Examination of the aircraft revealed significant damage to the right main landing gear system. The structural integrity of the gear strut was compromised due to the collision with the stationary runway light. No mechanical failures were identified in the landing gear mechanism prior to the impact, confirming that the failure mode was purely external and impact-induced.

Findings

The primary factor contributing to this incident was the pilot's inability to maintain directional control during the landing roll due to strong gusting winds. The weather conditions, specifically the 30-35 knot gusts from a quartering direction, exceeded the aircraft's crosswind capability or the pilot's ability to counteract them effectively. The right main landing gear failed as a direct result of striking an obstacle on the runway surface.

Safety message

Pilots operating in high-wind conditions must remain vigilant for sudden gusts that can cause rapid weather-vaning. Adequate crosswind correction techniques and awareness of runway obstacles are critical to preventing gear damage during landing rollouts.

Probable cause

The pilot's failure to maintain directional control during the landing rollout due to strong gusting winds, which resulted in the right main landing gear striking a runway light.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X36236. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.