Casualties unknown

Forced Landing in Tree Tops After Fog Engulfs Mountain Pass (N9052M)

Greenville, ME, US

On May 20, 1983, a Cessna 180H (registration N9052M) was involved in an aviation accident near Greenville, ME. 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 2026-07-04Data APIEditorial standards

Aircraft departed Greenville under overcast skies, encountered near-zero visibility in fog at Horseshoe Pond pass, forced landing in tree tops.

Departure and Weather Conditions

The flight departed Greenville at 1820. The weather at that time was estimated with an overcast ceiling between 2,000 and 2,500 feet.

Terrain and Visibility

Horseshoe Pond, situated at 1,500 feet mean sea level, is surrounded by mountains reaching 2,700 feet. As the aircraft approached the pass, the pond was initially visible. However, a prevailing south wind had caused fog to roll over the ridge and envelop the pass. Visibility rapidly deteriorated to near zero within yards of the pond.

Forced Landing

Unable to turn around within the confines of the pass, the pilot executed a forced landing in the tree tops.

Frequently asked questions

What happened in the 20 May 1983 Cessna 180H accident near Greenville, ME?

Aircraft departed Greenville under overcast skies, encountered near-zero visibility in fog at Horseshoe Pond pass, forced landing in tree tops.

What aircraft was involved and where did it happen?

The accident on 20 May 1983 involved a Cessna 180H, registration N9052M, at Greenville, ME.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001214X43133. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.