Casualties unknown

Overweight Aircraft Crashes After Takeoff Due to Center of Gravity Issues (N20517)

Emmetsburg, IA, US

On September 8, 1985, a Cessna 172 M (registration N20517) was involved in an aviation accident near Emmetsburg, IA. Investigators recorded the probable cause as: The pilot's failure to properly load the aircraft, resulting in an overweight condition and a center of gravity that exceeded the aft limit, which led to loss of control during takeoff. 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 2026-06-22Data APIEditorial standards

An aircraft crashed in a field shortly after takeoff because it was overloaded and its center of gravity exceeded the aft limit, according to an official investigation.

What happened

The aircraft departed from an airport with a departure altitude (DA) of 1950 feet but lost altitude during the initial climb phase. Witnesses reported that the plane settled as if the pilot had raised the flaps after takeoff. During a right turn, the aircraft continued to lose altitude and ultimately crashed into a field on a turkey farm located approximately one mile south of the airport.

The investigation

A subsequent examination of the accident site and records revealed critical loading errors. The aircraft was found to be 264 pounds overweight at the time of departure. Furthermore, the center of gravity (CG) exceeded the aft limit, which severely compromised the aircraft's stability and controllability during the critical takeoff and initial climb phases.

Findings

The primary factors contributing to the accident were the overweight condition and the center of gravity exceeding limits. These loading errors prevented the pilot from maintaining adequate altitude after takeoff. The aircraft was unable to sustain flight, leading to the crash in the adjacent field.

Probable cause

The pilot's failure to properly load the aircraft, resulting in an overweight condition and a center of gravity that exceeded the aft limit, which led to loss of control during takeoff.

Frequently asked questions

What happened in the 8 Sept 1985 Cessna 172 M accident near Emmetsburg, IA?

An aircraft crashed in a field shortly after takeoff because it was overloaded and its center of gravity exceeded the aft limit, according to an official investigation.

What aircraft was involved and where did it happen?

The accident on 8 Sept 1985 involved a Cessna 172 M, registration N20517, at Emmetsburg, IA.

What was the probable cause of the accident?

The pilot's failure to properly load the aircraft, resulting in an overweight condition and a center of gravity that exceeded the aft limit, which led to loss of control during takeoff.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X37857. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.