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Atlas / NTSB / MIA84LA028

NTSB CAROL · Event

Event MIA84LA028

1983-11-10 OKEECHOBEE, Florida, United States Airport · OBE None 1 aircraft Status: Completed

Registry · N123EF

FAA Aircraft Registry record.

Make / Model

DEHAVILLAND DHC-2 MK. I(L20A)

Year of manufacture

1954 · 29 years old at event

Engine

P&W R-985 SERIES (450 hp)

Seats / Engines

8 seats · 1 engine

Last airworthiness date

19990830

ADS-B equipped

Yes — Mode-S A05F41

Registrant of record

RAINBOW RIVER LODGE AVIATION LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Factual narrative

THE PLT REPORTED THAT DURING FLT, THE ENG HAD A PARTIAL LOSS OF POWER. HE ATTEMPTED TO DIVERT TO AN ARPT. HE WAS ABLE TO GET ON FINAL APCH, BUT WHEN HE SAW HE COULD NOT REACH THE RUNWAY, HE TURNED AWAY FROM THE LIGHTS & A BUILDING FOR AN EMERGENCY LANDING. HOWEVER, BEFORE LANDING, THE ACFT COLLIDED WITH POWER LINES, THEN IMPACTED THE GROUND. AN EXAM OF THE ENG REVEALED THAT THE EXHAUST VALVE HEAD OF THE #1 CYLINDER HAD SEPARATED. WITH CONTINUED OPERATION OF THE ENG, DEBRIS ENTERED THE #1 CYLINDER CAUSING FURTHER DAMAGE & LOSS OF POWER. THE SODIUM COOLED EXHAUST VALVE, PN 74541 AH-ED, HAD APRX 300 HRS IN SERVICE. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1983_MIA84LA028.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.