Casualties unknown

Aircraft Crashes During ILS Backcourse Approach to Runway 26 (N5055F)

Marquette, MI, US

On June 16, 1991, a Piper PA-28-181 (registration N5055F) operated by Eric E. Nyman was involved in an aviation accident near Marquette, MI. Investigators recorded the probable cause as: THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN PROPER ALTITUDE. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 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

An aircraft cleared for an ILS-backcourse approach to Runway 26 crashed after witnesses observed it turn north and descend into terrain. The pilot offered no explanation, and investigators found no mechanical issues.

Accident Overview

The aircraft involved in this accident was cleared for an ILS-backcourse approach to Runway 26. The pilot did not provide any explanation for the events that followed. During the subsequent investigation, no mechanical deficiencies were found that could have contributed to the accident.

Witness Observations

Witnesses located at the airport provided a description of the aircraft's final moments. They observed the aircraft approaching the airport from the southeast, flying in a northwest direction. After that, the aircraft crossed over the airport while heading northeast. It then turned to the north and began a descent that ended with the aircraft contacting the terrain.

Investigation Findings

The investigation examined both operational and mechanical aspects. The pilot’s lack of explanation meant that the reasons for the deviation from the planned approach could not be determined. A thorough inspection of the aircraft’s systems revealed nothing of a mechanical nature that would have played a role in the accident. The cause of the accident remains unresolved based on available evidence.

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Frequently asked questions

What happened in the 16 Jun 1991 Piper PA-28-181 accident near Marquette, MI?

An aircraft cleared for an ILS-backcourse approach to Runway 26 crashed after witnesses observed it turn north and descend into terrain. The pilot offered no explanation, and investigators found no mechanical issues.

What aircraft was involved and where did it happen?

The accident on 16 Jun 1991 involved a Piper PA-28-181, registration N5055F, operated by Eric E. Nyman, at Marquette, MI.

What was the probable cause of the accident?

THE PILOT-IN-COMMAND'S FAILURE TO MAINTAIN PROPER ALTITUDE.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001212X17224. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.