2 fatalities

1983-03-18: Mitsubishi MU-2 Marquise (N473MA) — Petroquimica Dominicana — North Adams-Harriman and West, United States of America

North Adams-Harriman and West, United States of AmericaLanding (descent or approach)

On March 18, 1983, a Mitsubishi MU-2 Marquise (registration N473MA) operated by Petroquimica Dominicana was involved in an aviation accident near North Adams-Harriman and West, United States of America during landing or approach. 2 people were killed. Investigators recorded the probable cause as: Occurrence #1: in flight encounter with weather Phase of operation: maneuvering Findings 1. (f) preflight planning/preparation - inadequate - pilot in command 2. (f) preflight briefing service - not obtained - pilot in command 3. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A).

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 1781220652Data APIEditorial standards

A pilot on a VFR flight reported visual contact with the ground but later impacted a mountain at 2,700 feet MSL, two miles south of the airport. Low ceiling obscured mountain peaks; both occupants were killed.

Flight History

At 1145, the pilot reported visual flight rules (VFR) conditions and requested radar vectors to the airport. He was issued a cruise clearance of 5,000 feet and given a heading. At 1151, when asked if he was familiar with the area, the pilot responded negatively. He was then advised of rising terrain in all quadrants, including a mountain reaching almost 3,700 feet, located three miles south of the airport. At 1154, the pilot was advised that the airport was less than a mile at 12 o'clock. Shortly thereafter, the aircraft impacted a mountain two miles south of the airport at an elevation of about 2,700 feet mean sea level (MSL).

Weather Conditions

A witness described the sky conditions as a low ceiling with clouds obscuring the mountain peaks. The airport is uncontrolled and has no published instrument approach procedure.

Accident Sequence

The aircraft was on a VFR flight when it encountered weather conditions that included low ceilings. The pilot had reported visual contact with the ground at 18 miles from the airport. Despite being advised of rising terrain and a mountain to the south, the aircraft collided with terrain during maneuvering. Both occupants were killed.

Probable Cause

The official probable cause findings are divided into two occurrences. Occurrence #1: In flight encounter with weather. Findings: 1. Preflight planning/preparation – inadequate – pilot in command; 2. Preflight briefing service – not obtained – pilot in command; 3. Weather condition – low ceiling; 4. VFR flight into instrument meteorological conditions (IMC) – attempted – pilot in command. Occurrence #2: In flight collision with terrain/water. Findings: 5. Terrain condition – mountainous/hilly; 6. Lack of familiarity with geographic area – pilot in command.