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Atlas / NTSB / MIA89GA144

NTSB CAROL · Event

Event MIA89GA144

1989-05-02 SUMMERLAND KEY, Florida, United States Fatal 1 aircraft Status: Completed

Aircraft involved

Probable cause & findings

THE FAILURE OF THE PILOT-IN-COMMAND TO ASSURE PROPER ALTITUDE AND CLEARANCE WAS MAINTAINED ABOVE THE TERRAIN AND TREES. THE TREES AND LIGHT CONDITION AT DUSK WERE CONTRIBUTING FACTORS.

Factual narrative

THE FLT (A MONROE COUNTY MOSQUITO CONTROL OPN) BEGAN AT ABOUT 1740 EDT TO CONDUCT LOW ALT SPRAYING. WHEN IT DID NOT RETURN, A SEARCH WAS INITIATED. AT ABOUT 0245, THE ACFT WAS FOUND IN A REMOTE AREA ON WATER KEY NEAR THE TOWN OF SUMMERLAND KEY, FL. EVIDENCE AT THE ACDNT SCENE SUGGESTED THE ACFT STRUCK 40 FT HIGH MANGROVE TREES WITH THE LEFT WING AS THE PLTS WERE MAKING A PROCEDURE TURN TO START ANOTHER SPRAY RUN. NO PREIMPACT FAILURE OR MALFUNCTION OF THE ACFT OR ENGS WAS FOUND. THERE WERE NO KNOWN WITNESSES, BUT THE ACDNT WAS ESTD TO HAVE OCCURRED AT ABOUT 2030 EDT. SUNSET WAS AT 1952 EDT. ABOUT 22 MI SW AT KEY WEST, THE 1750 WX WAS IN PART: 1500' SCAT, 10 MI VIS, WIND FROM 330 DEG AT 10 KTS. APRX 85 MI NNE, THE WIND WAS FROM 100 DEG AT 11 KTS. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1989_MIA89GA144.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.