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Accidents · NTSB MIA84LA128 · Preliminary: the investigation is not finished

Cessna 172 accident near Marathon, Florida, April 2, 1984

On April 2, 1984, a Cessna 172, registered N64110, was destroyed in an accident near Marathon, Florida. It was a personal flight under general aviation rules (Part 91). 4 people were killed. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
April 2, 1984
Place
Marathon, Florida · map
Type
Accident
Injuries
4 people were killed.
Weather
visual conditions (good weather)
Aircraft
Cessna 172 · all 172s on the register
Registration
N64110 · no longer on the register · serial 17265026
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

THE ACFT WAS MISSING AFTER DEPARTING ON A FLT FROM MARATON, FL TO EVERGLADES CITY, FL. SAR PERSONNEL FOUND THE BODIES OF THE PLT & 3 PAX, BUT THE ACFT WAS NOT FOUND. IT WAS PRESUMED TO HAVE BEEN DESTROYED DURING A CRASH IN THE GULF OF MEXICO.

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record from the NTSB's investigation tables, in plain English

Pilot

  • Certificate: private
  • Ratings: single-engine land
  • Flight time: 911 hours in all; 911 in this make and model; 7 in the last 90 days
  • Medical certificate: Class 3 (valid medical--no waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 1,164 hours
  • Last inspection: inspection type not recorded, March 23, 1984
  • Maximum gross weight: 2,300 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming O-320-E2D (piston); 0 hours total

The flight

  • Departed from: MTH Marathon FL
  • Destination: X01 Everglades City FL
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: dusk
  • Wind: from 360° at 7 knots
  • Visibility: 15 statute miles
  • Sky: scat at 8,000 ft
  • Temperature: 79°F (26°C), dew point 48°F (9°C)
  • Altimeter: 30.00 inHg

Injuries

FatalSeriousMinorNone
Crew1
Passengers3

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.