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Atlas / NTSB / MIA91GA050

NTSB CAROL · Event

Event MIA91GA050

1990-12-20 ST. MARKS, Florida, United States Minor 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

THE PILOT IN COMMAND'S FAILURE TO MAINTAIN SAFE ALTITUDE WHILE DESCENDING OVER A COASTLINE, AT NIGHT, IN VISUAL METEOROLOGICAL CONDITIONS. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT IN COMMAND'S FAILURE TO OBTAIN A FULL WEATHER BRIEFING PRIOR TO DEPARTURE RESULTING IN HIS ENCOUNTER WITH INSTRUMENT METEOROLOGICAL CONDITIONS AT HIS DESTINATION.

Factual narrative

PILOT DID NOT RECEIVED FULL WEATHER BRIEFING PRIOR TO DEPARTURE ON CROSS COUNTRY FLIGHT. ON ARRIVAL AT DEST FLIGHT ENCOUNTERED INSTRUMENT METEOROLGICAL CONDITIONS, AS HAD BEEN FORECAST. WHILE DESCENDING IN VISUAL METEOROLOGICAL CONDITIONS, AT NIGHT, OVER COASTLINE TO GET BELOW LOW OVERCAST LAYER OF CLOUDS, PILOT LOST OUTSIDE VISUAL REFERENCE AND ALLOWED THE HELICOPTER TO DESCEND AND CRASH INTO THE WATER. NO MECHANICAL FAILURES OF THE HELICOPTER OR ENGINE WERE NOTED AFTER THE ACCIDENT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1990_MIA91GA050.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.