Casualties unknown

1984-05-20: Bell 47D1 (N9158R) — Alpena, MI

Alpena, MI, US

On May 20, 1984, a Bell 47D1 (registration N9158R) was involved in an aviation accident near Alpena, MI. 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 1781061362Data APIEditorial standards

A helicopter crashed in a wooded area after reportedly buzzing a baseball game and performing a maneuver. No preimpact failures were found except an overdue annual inspection. The pilot's blood alcohol level was 0.25%.

Accident Sequence

Prior to the accident, the owner and pilot of the helicopter had reportedly flown low over a local baseball game, an action commonly referred to as "buzzing." Shortly after this incident, witnesses observed the helicopter maneuvering over a wooded area. The aircraft entered a nose-high attitude, then rolled or banked, and subsequently descended into the trees, where it crashed.

Aircraft Inspection

An inspection of the helicopter after the crash revealed no preimpact mechanical discrepancies. However, the annual inspection required for the aircraft was found to be overdue. No other issues with the airframe or systems were identified.

Pilot Toxicology

A blood sample taken from the pilot was tested and showed an alcohol level of 0.25%. This value is several times the legal limit for operating a motor vehicle in many jurisdictions. No further toxicological findings were reported.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X39508. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.