The U.S. aircraft register, updated daily
Accidents · NTSB CHI84LU004 · Preliminary: the investigation is not finished

Ultralight Flight, Inc. PHANTOM accident near St. Joseph, Illinois, June 16, 1984

On June 16, 1984 at about 1:00 am local time, a Ultralight Flight, Inc. PHANTOM, registered UNREG, was involved in an accident near St. Joseph, Illinois (Busboom (Pvt) airport). It was a personal flight under ultralight rules (Part 103). 1 person was seriously injured. 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 16, 1984 · about 1:00 am local time
Place
St. Joseph, Illinois · Busboom (Pvt) · map
Type
Accident
Injuries
1 person was seriously injured.
Weather
visual conditions (good weather)
Aircraft
Ultralight Flight, Inc. PHANTOM
Registration
UNREG · no longer on the register · serial 00172
Damage
Not recorded
Flight
Personal flight · ultralight rules (Part 103)

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

THE PLT WAS PRACTICING POWER-OFF LANDINGS, DURING WHICH HE REPORTEDLY CUT-OFF THE ENGINE AT ABOUT 50 FT AGL. DURING THE 5TH LANDING OF THIS TYPE, THE ULTRALIGHT LOST SPEED, THEN ENTERED A DESCENT & TOUCHED DOWN HARD IN A NOSE LOW ATTITUDE.

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: multi-engine land; instrument: airplane
  • Medical certificate: Unknown
  • Seat: frt

The aircraft

  • Last inspection: inspection type not recorded
  • Maximum gross weight: 440 lb
  • Seats: 1
  • Landing gear: fixed
  • Engine: Kawasaki TA 440A (piston); 0 hours total

The flight

  • Flight plan: none
  • Runway 0, 2,200 ft by 50 ft

Weather at the time

  • Light: daylight
  • Visibility: 10 statute miles
  • Sky: not recorded; not recorded
  • Temperature: 0°F (-18°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.

Other NTSB records under UNREG the same tail number, which may have belonged to a different aircraft at the time

2026-07-07CEN26LA246 · accident near Hooker, OK · substantial damage · minor injuries
2026-02-28CEN26LA131 · accident near Van Burensburg, IL · substantial damage · no injuries
2025-10-13ERA26LA017 · accident near Gaffney, SC · substantial damage · serious injuries
2025-09-27CEN25LA397 · accident near Harvard, IL · substantial damage · no injuries
2025-09-12CEN25LA385 · accident near Rossville, IN · substantial damage · serious injuries
2025-07-07CEN25LA242 · incident near Ingram, TX · minor damage · no injuries
2025-06-18DCA25WA305 · accident near N/A · serious injuries
2025-05-01OPS25LA034 · incident near Washington, DC
2025-04-11CEN25LA155 · accident near Brady, TX · substantial damage · serious injuries
2025-01-30DCA25MA108 · accident near Washington, DC · destroyed · fatal

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.