Boeing A75N1 accident near East Troy, Wisconsin, July 21, 1996
On July 21, 1996 at about 3:11 pm local time, a Boeing A75N1, registered N58712, was substantially damaged in an accident near East Troy, Wisconsin (East Troy Municipal 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
corrosion and fracture of the rudder control horn.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 21, 1996 · about 3:11 pm local time
- Place
- East Troy, Wisconsin · East Troy Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Boeing A75N1 · all A75N1s on the register
- Registration
- N58712 · registry record · serial 75-341
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported that he flew a 'normal' approach to land on runway 8. During the landing roll, the airplane began to 'drift' to the right. The pilot 'applied the brakes gently' and the airplane nosed over. Examination of the airplane revealed the left rudder horn was fractured. No other evidence of mechanical malfunction was reported. Metallurgical examintion of the rudder horn 'showed no evidence of progressive cracking, such as fatigue. The fracture was typical of an overstress separation. There was thinning of the wall and corrosion pits on the inside surface of the tube... .' Measurements of some of the corrosion pits revealed that the thickness of the .035 inch wall tubing was corroded to a thickness of .008 inches in some areas. 'There was no indication that any of the corrosion pits had penetrated through the tube to the outside surface.'
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: 532 hours in all; 56 in this make and model; 15 in the last 90 days; 15 in the last 30 days; 500 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: rear
The aircraft
- Airframe total time: 1,900 hours
- Last inspection: annual inspection, October 1, 1995; 13 hours since
- Maximum gross weight: 2,950 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental W-670 (piston); 0 hours total
The flight
- Departed from: Staughton WI at 2:40 pm
- Destination: 57C
- Flight plan: none
- Runway 8, 3,900 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 140° at 9 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 19°F (-7°C), dew point 14°F (-10°C)
- Altimeter: 30.00 inHg
- Observation at 4:56 pm from MKE, 22 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 1 |
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.