No fatalities

Enstrom F28C Sustains Substantial Damage After In-Flight Power Loss (N100WZ)

Ephrata, PA, US

On May 14, 1986, an Enstrom F-28C (registration N100WZ) was involved in an aviation accident near Ephrata, PA. No fatalities were reported. Investigators recorded the probable cause as: Loss of power for reasons that could not be determined from the available information. 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 2026-06-20Data APIEditorial standards

An Enstrom F28C helicopter experienced an unexplained loss of power while cruising. The pilot executed a forced landing in a field, resulting in substantial damage to the rotor system but no injuries to the occupant.

What happened

The Enstrom F28C was operating in a cruise configuration when it suffered an unexpected loss of engine power. The specific mechanical or operational cause for this failure was not immediately apparent during the flight phase.

Following the power loss, the pilot initiated emergency procedures and selected a large open field as a landing site. Upon touchdown, the helicopter sustained significant structural damage. The main rotor assembly was damaged upon impact with the ground, and the tail rotor completely separated from the tail boom structure.

The investigation

Post-accident examination confirmed the extent of the airframe damage described above. Records regarding the pilot's total flight time were not available from either the pilot or their personal records at the time of the report.

Findings

The sole occupant, identified as the pilot, was not injured in the incident. The aircraft sustained substantial damage. The loss of power occurred during cruise flight, leading to a forced landing in an unprepared area.

Probable cause

Loss of power for reasons that could not be determined from the available information.

Frequently asked questions

What happened in the 14 May 1986 Enstrom F-28C accident near Ephrata, PA?

An Enstrom F28C helicopter experienced an unexplained loss of power while cruising. The pilot executed a forced landing in a field, resulting in substantial damage to the rotor system but no injuries to the occupant.

Were there any fatalities in the 14 May 1986 Enstrom F-28C accident?

No fatalities were recorded in this accident.

What aircraft was involved and where did it happen?

The accident on 14 May 1986 involved an Enstrom F-28C, registration N100WZ, at Ephrata, PA.

What was the probable cause of the accident?

Loss of power for reasons that could not be determined from the available information.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X33690. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.