Casualties unknown

Takeoff Abnormality Leads to Forced Landing and Gear Separation (N55404)

Hartford, WI, US

On June 14, 1993, a Cessna 172P (registration N55404) operated by Waukesha Flying Services,inc. was involved in an aviation accident near Hartford, WI. Investigators recorded the probable cause as: THE FAILURE OF THE NUMBER FOUR CYLINDER AND UNSUITABLE TERRAIN. 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

During takeoff, a loud pop and loss of engine power forced a landing on a grass runway. The aircraft departed the strip, crossed a ditch, and separated the nose and left main landing gear. Engine teardown revealed a split cylinder.

Incident

Approximately 200 feet above ground level over the departure end of the runway, the pilot heard a loud pop. The engine's power dropped off, and oil smoke filled the air. The pilot executed a forced landing onto a grass runway. During the rollout, the aircraft departed the edge of the grass strip and crossed a shallow ditch. The impact with the ditch caused the separation of the nose landing gear and left main landing gear from the airplane.

Investigation

A subsequent engine teardown revealed that the number 4 cylinder had split in half near the center of the barrel. No further details about the aircraft type, registration, operator, injuries, or weather were provided in the source.

Frequently asked questions

What happened in the 14 Jun 1993 Cessna 172P accident near Hartford, WI?

During takeoff, a loud pop and loss of engine power forced a landing on a grass runway. The aircraft departed the strip, crossed a ditch, and separated the nose and left main landing gear. Engine teardown revealed a split cylinder.

What aircraft was involved and where did it happen?

The accident on 14 Jun 1993 involved a Cessna 172P, registration N55404, operated by Waukesha Flying Services,inc., at Hartford, WI.

What was the probable cause of the accident?

THE FAILURE OF THE NUMBER FOUR CYLINDER AND UNSUITABLE TERRAIN.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X12565. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.