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Engine RPM Drop Leads to Forced Landing After Throttle Linkage Disconnection (N3882L)

Flowery Branch, GA, US

On June 7, 1994, a Cessna 172 (registration N3882L) operated by Mathis, Claudy J. was involved in an aviation accident near Flowery Branch, GA. Investigators recorded the probable cause as: THE MAINTENANCE PERSONNEL'S FAILURE TO PROPERLY SECURE THE THROTTLE LINKAGE ASSEMBLY THAT RESULTED IN A REDUCTION IN ENGINE POWER. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

A pilot experienced an engine RPM drop from 2500 to 1500 during cruise at 2300 feet. Attempts to restore power failed, leading to a forced landing. Investigation revealed a disconnected throttle linkage at the carburetor, overhauled two flight hours prior.

Incident Details

While cruising at 2300 feet, the pilot observed a drop in engine RPM from 2500 to 1500. Attempts to restore full power were unsuccessful.

Pilot Actions

The pilot selected a nearby field for a forced landing. During the approach and landing, the pilot controlled the available 1500 RPM using the magneto switch.

Investigation Findings

Examination of the engine assembly revealed that the throttle linkage at the carburetor was disconnected. The linkage is normally secured with a bolt, a nut, and a safety cotter pin; these items were not recovered for examination.

Maintenance History

According to the operator, the carburetor had been overhauled and installed on the engine two flight hours before the incident.

Maintenance error

Related events

Same aircraft family

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Frequently asked questions

What happened in the 7 Jun 1994 Cessna 172 accident near Flowery Branch, GA?

A pilot experienced an engine RPM drop from 2500 to 1500 during cruise at 2300 feet. Attempts to restore power failed, leading to a forced landing. Investigation revealed a disconnected throttle linkage at the carburetor, overhauled two flight hours prior.

What aircraft was involved and where did it happen?

The accident on 7 Jun 1994 involved a Cessna 172, registration N3882L, operated by Mathis, Claudy J., at Flowery Branch, GA.

What was the probable cause of the accident?

THE MAINTENANCE PERSONNEL'S FAILURE TO PROPERLY SECURE THE THROTTLE LINKAGE ASSEMBLY THAT RESULTED IN A REDUCTION IN ENGINE POWER.

More accident analyses

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001206X01430. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.