Cessna 170B accident near Monticello, Iowa, May 4, 1986
On May 4, 1986 at about 8:00 pm local time, a Cessna 170B, registered N66F, was substantially damaged in an accident near Monticello, Iowa (Monticello Muni airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
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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 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 4, 1986 · about 8:00 pm local time
- Place
- Monticello, Iowa · Monticello Muni · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 170B · all 170Bs on the register
- Registration
- N66F · registry record · serial 25010
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT STATED THAT FOLLOWING A NORMAL TOUCHDOWN THE WIND PICKED UP AND OVERTURNED THE ACFT. HE HAD RECENTLY PURCHASED THE ACFT AND WAS FERRYING IT HOME WHEN THE ACCIDENT OCCURRED. HE FURTHER STATED THAT HE OWNED A TAILWHEEL ACFT PRIOR TO PURCHASING THIS ONE, BUT HE WAS UNABLE TO FURNISH A REGISTRATION NUMBER. THE PLT ALSO STATED THAT HE HAD CONSIDERABLE CROSSWIND EXPERIENCE AND TRAINING IN TAILWHEEL TYPE ACFT BUT COULD NOT SUBSTANTIATE THIS CLAIM, NOR WAS THERE ANY RECORDOF FORMAL TRAINING AND TRANSITION BY A CERTIFIED FLIGHT INSTRUCTOR.
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
What happened, in order
- LOSS OF CONTROL - ON GROUND/WATER during landing - roll
- NOSE OVER during landing - roll
Pilot
- Ratings: single-engine land, none, none, none
- Flight time: 127 hours in all; 7 in this make and model; 6 in the last 90 days; 97 as pilot in command
- Medical certificate: class 3
The aircraft
- Airframe total time: 3,040 hours
- Maximum gross weight: 2,050 lb
- Seats: 4
- Landing gear: fixed
- Engine: Continental C145-2 (piston); 0 hours total
- Operating certificate: in the vicinity
The flight
- Departed from: LCG Wayne NE at 5:47 pm
- Destination: MXO Monticello IA
- Flight plan: none
- Runway 13, 3,500 ft by 50 ft
Weather at the time
- Light: daylight
- Wind: from 200° at 15 knots, gusting 22
- Visibility: 15 statute miles
- Sky: scattered at 8,000 ft
- Temperature: 81°C, dew point 46°C
- Altimeter: 29 inHg
- Observation at 7:51 pm from CID, 38 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number MKC86LA100.