The U.S. aircraft register, updated daily
Accidents · NTSB CHI93LA301 · Final report

Cessna 180 accident near Naubinway, Michigan, August 1, 1993

On August 1, 1993 at about 8:35 pm local time, a Cessna 180, registered CFPTU, was substantially damaged in an accident near Naubinway, Michigan. It was a personal flight under general aviation rules (Part 91). 1 person was killed and 1 person had minor injuries. The weather was instrument conditions (cloud, fog or low visibility).

The NTSB's probable cause their words, unchanged

THE PILOT'S IMPROPER FLARE FOR LANDING. FACTORS ASSOCIATED WITH THE ACCIDENT ARE THE LOW CLOUDS AND FOG, THE ROUGH WATER AT THE LANDING SITE, AND THE PILOT'S CONTINUED FLIGHT INTO KNOWN ADVERSE WEATHER.

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

What the record shows

Date
August 1, 1993 · about 8:35 pm local time
Place
Naubinway, Michigan · map
Type
Accident
Injuries
1 person was killed and 1 person had minor injuries.
Weather
instrument conditions (cloud, fog or low visibility)
Aircraft
Cessna 180 · all 180s on the register
Registration
CFPTU · no longer on the register · serial 18051344
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE PILOT WAS FLYING HIS FLOAT EQUIPPED AIRPLANE ALONG THE NORTHERN SHORE OF LAKE MICHIGAN. HE OBSERVED LOWERING CEILINGS AND FOG OVER THE LAKE, AND GAVE A PILOT REPORT TO A FSS OF CLEAR AIR OVER LAND. HE CONTINUED TOWARDS HIS DESTINATION AND FLEW INTO THE DETERIORATING WEATHER. THE PASSENGER STATED THAT THE PILOT ELECTED TO MAKE A PRECAUTIONARY LANDING IN THE LAKE BECAUSE OF THE REDUCED VISIBILITY AND LOW CEILING. SHE SAID THE WATER WAS ROUGH AND THE AIRPLANE LANDED HARD, DUG IN THE RIGHT FLOAT AND NOSED OVER. WITH THE PILOT'S ASSISTANCE, SHE WAS ABLE TO ESCAPE THE CABIN OF THE AIRPLANE THROUGH THE PASSENGER WINDOW AND SWIM TO THE SURFACE. SHE WENT BACK TO HELP THE PILOT (HER HUSBAND) BUT HE WAS STUCK HALF-WAY OUT THE WINDOW AND SHE COULD NOT FREE HIM.

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: foreign licence, private
  • Ratings: single-engine land; single-engine sea
  • Flight time: 750 hours in all
  • Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Last inspection: inspection type not recorded
  • Maximum gross weight: 2,800 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Continental O-470R (piston); 0 hours total

The flight

  • Departed from: 3WO Shawano WI at 7:20 pm
  • Destination: YAM Sault St. Marie
  • Flight plan: VFR
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 1 statute miles
  • Sky: not recorded; not recorded
  • Temperature: 73°F (23°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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.