Casualties unknown

1992-06-21: Mbb BK-117 (N117HH) — Rocky Mountain Helicopters — Middletown, CT

Middletown, CT, US

On June 21, 1992, a Mbb BK-117 (registration N117HH) operated by Rocky Mountain Helicopters was involved in an aviation accident near Middletown, CT. Investigators recorded the probable cause as: A WIRE STRIKE AFTER THE PILOT MADE A DECISION TO CONTINUE THE APPROACH INTO AN AREA OF HAZARDS. FACTORS RELATED TO THE ACCIDENT WERE THE FAILURE OF THE PILOT AND THE HOSPITAL COMMUNICATOR TO REQUEST ALL AVAILABLE INFORMATION ABOUT THE LANDING AREA AND… This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards
Aircraft registered N117HH
Aircraft registered N117HH. Photo: DUNCAN KIRK from Coeur d'Alene, United States / CC BY 4.0, via Wikimedia Commons

An EMS helicopter struck an unmarked static wire 105 feet above ground, leading to tail boom separation and uncontrolled descent. One occupant was fatally injured. The pilot did not recall the event; witnesses reported dark night with forming fog.

Accident Overview

A northbound EMS helicopter struck an unmarked static wire located 105 feet above ground, approximately one-quarter mile south of its intended landing area. The collision caused the tail boom to separate from the fuselage, and the helicopter descended uncontrollably, striking the ground in an inverted attitude. One occupant sustained fatal injuries.

Pilot and Witness Accounts

When interviewed after the accident, the pilot stated that he did not remember the event. Witnesses noted that the night was dark with fog beginning to form. They reported that no abrupt maneuvers were observed prior to the wire strike.

Investigation Findings

The investigation determined that the pilot had not conducted a reconnaissance of the area nor communicated that he had identified the landing area when the wire strike occurred. Additionally, numerous emergency vehicles with red and blue flashing lights were present in the area at the time of the accident. Neither the pilot nor the hospital communications coordinator who took the request for the helicopter had requested any hazard information about the proposed landing area.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X14950. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.