The U.S. aircraft register, updated daily
Accidents · NTSB CHI91LA042 · Final report

Cessna 150 accident near Portage, Wisconsin, December 6, 1990

On December 6, 1990 at about 10:50 pm local time, a Cessna 150, registered N11327, was substantially damaged in an accident near Portage, Wisconsin (Portage airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

DELAYED GO-AROUND AND STALL ENCOUNTERED. CONTRIBUTING FACTORS WERE A SNOW BANK, PROPER ALIGNMENT NOT ATTAINED, AND RAISING THE FLAPS NOT PERFORMED BY THE PIC.

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

What the record shows

Date
December 6, 1990 · about 10:50 pm local time
Place
Portage, Wisconsin · Portage · map
Type
Accident
Injuries
No one was hurt; 2 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Cessna 150 · all 150s on the register
Registration
N11327 · no longer on the register · serial 15075331
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

WHILE ATTEMPTING TO LAND, THE PLT SAID THAT HE DRIFTED TO THE LEFT AND THE GEAR CONTACTED THE BORDERING SNOW. HE ELECTED TO GO-AROUND, BUT WITH FULL FLAPS AND A PAX, THE ACFT STALLED, STRUCK THE TERRAIN AND NOSED OVER.

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: 160 hours in all; 160 in this make and model
  • Medical certificate: Class 3 (valid medical--no waivers/lim.)
  • Seat: unk

The aircraft

  • Last inspection: inspection type not recorded; 0 hours since
  • Maximum gross weight: 1,600 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Continental O-200-A (piston); 0 hours total

The flight

  • Departed from: W106 Wanaukee WI at 10:00 pm
  • Flight plan: none
  • Runway 35, 3,490 ft by 40 ft

Weather at the time

  • Light: daylight
  • Wind: from 290° at 7 knots
  • Visibility: 15 statute miles
  • Sky: clear
  • Temperature: 30°F (-1°C), dew point 10°F (-12°C)
  • Altimeter: 29.00 inHg
  • Observation at 9:51 pm from MSN, 30 miles away

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.