Casualties unknown

VFR Flight Crashes on Mt. Fitch After Distress Call and Vectoring Below Minimum Altitude (N6586J)

Adams, MA, US

On September 17, 1988, a Cessna 172N (registration N6586J) was involved in an aviation accident near Adams, MA. Investigators recorded the probable cause as: The ATC handbook permitted vectoring of VFR aircraft below minimum vectoring altitude without terrain warning; controllers failed to adhere to emergency procedures; supervisors took no corrective action; and controllers lacked training in handling emergencies… 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 VFR aircraft (N6586J) crashed on Mt. Fitch after encountering weather, circling a hay field, and receiving vectors below minimum vectoring altitude from ATC. Communication relays failed to convey terrain elevation.

Incident Overview

On an unspecified date, aircraft N6586J, operating under visual flight rules (VFR), encountered adverse weather conditions and began circling a hay field to prepare for an emergency landing. The pilot made a distress call on the emergency frequency 121.5 MHz.

Communications and ATC Actions

Monarch Flight 58, a Boeing 757, heard the pilot's call and offered assistance. Albany Approach Control responded on the same frequency, and Flight 58 relayed information between the controller and N6586J. The controller provided information about a 3,700-foot mountain peak in the vicinity, but Flight 58 did not relay the terrain elevation to N6586J, nor did the controller note this error.

Boston ARTCC established radar contact with N6586J and began relaying vectors. However, the controller believed the pilot was providing his own terrain separation because he was VFR. Consequently, the controller issued a vector below the minimum vectoring altitude (MVA), which was 4,000 feet or above. The pilot subsequently encountered instrument meteorological conditions (IMC) and reported descending to 2,500 feet to "try to get out of the clouds." Shortly thereafter, the aircraft crashed on Mt. Fitch.

Investigation Findings

The ATC handbook at the time allowed vectoring of VFR aircraft below the MVA with no warning of terrain. The involved controllers did not adhere to emergency procedures outlined in the handbook. Supervisors took no action to correct the situation. Additionally, the controllers lacked training in handling emergencies concerning VFR pilots that encounter weather below the MVA.

Probable cause

The ATC handbook permitted vectoring of VFR aircraft below minimum vectoring altitude without terrain warning; controllers failed to adhere to emergency procedures; supervisors took no corrective action; and controllers lacked training in handling emergencies involving VFR pilots encountering weather below minimum vectoring altitude.

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Frequently asked questions

What happened in the 17 Sept 1988 Cessna 172N accident near Adams, MA?

A VFR aircraft (N6586J) crashed on Mt. Fitch after encountering weather, circling a hay field, and receiving vectors below minimum vectoring altitude from ATC. Communication relays failed to convey terrain elevation.

What aircraft was involved and where did it happen?

The accident on 17 Sept 1988 involved a Cessna 172N, registration N6586J, at Adams, MA.

What was the probable cause of the accident?

The ATC handbook permitted vectoring of VFR aircraft below minimum vectoring altitude without terrain warning; controllers failed to adhere to emergency procedures; supervisors took no corrective action; and controllers lacked training in handling emergencies involving VFR pilots encountering weather below minimum…

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X26907. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.