The U.S. aircraft register, updated daily
Accidents · NTSB MIA84LA186 · Preliminary: the investigation is not finished

Cessna A188B accident near Marianna, Florida, June 18, 1984

On June 18, 1984 at about 1:20 pm local time, a Cessna A188B, registered N5630G, was substantially damaged in an accident near Marianna, Florida. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 1 person was on board or involved. 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
June 18, 1984 · about 1:20 pm local time
Place
Marianna, Florida · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Cessna A188B · all A188Bs on the register
Registration
N5630G · no longer on the register · serial 18801120T
Damage
Substantial damage
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

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

DURING A CROP DUSTING OPERATION, THERE WAS AN APPARENT LOSS OF POWER & OIL SPRAYED ON THE WINDSHIELD OF THE ACFT. THE PLT STATED THAT WHEN HE APPLIED POWER, THERE WAS NO RESPONSE. HE MADE A FORCED LANDING ON A ROAD, BUT THE RIGHT WING OF THE ACFT HIT A TREE. AN EXAM OF THE ENG REVEALED THAT THE CRANKSHAFT WAS CRACKED AT THE PROPELLER FLANGE & THAT OIL WAS SEEPING FROM THE CRACK.

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: commercial pilot
  • Ratings: single-engine land; instrument: airplane
  • Flight time: 2,500 hours in all
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: ctr

The aircraft

  • Last inspection: inspection type not recorded
  • Maximum gross weight: 4,200 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: Continental IO-520-D (piston); 0 hours total

The flight

  • Departed from: MAI Marianna FL at 7:10 am
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 15 statute miles
  • Sky: clear
  • Temperature: 79°F (26°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1

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.