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Accidents · NTSB CHI88LA193 · Preliminary: the investigation is not finished

Cessna 172 accident near Milwaukee, Wisconsin, August 7, 1988

On August 7, 1988 at about 10:00 pm local time, a Cessna 172, registered N65711, was substantially damaged in an accident near Milwaukee, Wisconsin (Timmerman airport). It was an other work-use flight under general aviation rules (Part 91). No one was hurt; 4 people were 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
August 7, 1988 · about 10:00 pm local time
Place
Milwaukee, Wisconsin · Timmerman
Type
Accident
Injuries
No one was hurt; 4 people were on board or involved.
Weather
visual conditions (good weather)
Aircraft
Cessna 172 · all 172s on the register
Registration
N65711 · registry record · serial 17275829
Damage
Substantial damage
Flight
Other work-use flight · general aviation rules (Part 91)

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

Pilot

  • Certificate: flight instructor, commercial pilot
  • Ratings: single-engine land; instructor: airplane single-engine; instrument: airplane
  • Flight time: 278 hours in all; 116 in this make and model; 34 in the last 90 days; 6 in the last 30 days; 153 as pilot in command
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: rgt

The aircraft

  • Airframe total time: 2,232 hours
  • Last inspection: annual inspection, July 8, 1988; 65 hours since
  • Maximum gross weight: 2,400 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming O-320-D2J (piston); 0 hours total
  • Operator: Gran Aire, INC.

The flight

  • Flight plan: none
  • Runway 33L, 3,251 ft by 275 ft

Weather at the time

  • Light: daylight
  • Wind: from 190° at 12 knots
  • Visibility: 15 statute miles
  • Sky: clear
  • Temperature: 90°F (32°C), dew point 0°F (-18°C)
  • Altimeter: 29.00 inHg
  • Observation at 9:49 pm from MWC

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.