Casualties unknown

1997-01-24: Cessna 650 (N777LF) — Wilkes-barre, PA

Wilkes-barre, PA, US

On January 24, 1997, a Cessna 650 (registration N777LF) was involved in an aviation accident near Wilkes-barre, PA. Investigators recorded the probable cause as: The collapse of the left main landing gear as a result of the malfunction of the downlock actuator for undetermined reasons. 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 Cessna Citation III experienced a left main landing gear collapse during landing after a bounce. The aircraft was on an ILS approach with a 20-degree wind correction. Post-accident examination found the actuator piston severed and bent.

Incident Overview

A Cessna Citation III, having completed a passenger pickup, was returning to the departure airport. The aircraft was established on the Instrument Landing System (ILS) approach to runway 04. The pilot applied a wind drift correction of approximately 20 degrees to the right to maintain alignment with the localizer course. The landing checks were completed, and all three landing gear indicator lights showed green.

Landing Sequence

The aircraft touched down within the first 1,000 feet of the runway, then bounced. After the bounce, it touched down again approximately 300 to 400 feet further down the runway. About 500 feet after the second touchdown, the left main landing gear collapsed, causing the airplane to stop on the runway.

Post-Accident Examination

Examination of the aircraft revealed no preimpact failures. The main landing gear actuator was examined, showing that the end of the piston was severed at the rod end attachment point and bent at an angle of approximately 20 degrees. The airport reported winds from 120 degrees at 25 knots. The aircraft's maximum demonstrated landing crosswind component was 25 knots.

Pilot Experience

The pilot had a total accumulated flight experience of 7,120 hours, including 52 hours in the Cessna Citation III make and model. Of those, 3 hours were logged in the preceding 30 days.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001208X07352. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.