# NTSB MKC86LA100: Cessna 170B, N66F, Monticello, IA, May 4, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 4, 1986, 15:00 local (20:00 UTC)
- Place: Monticello, IA
- Coordinates: 42.230678, -91.19078 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.2307&lon=-91.1908&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 34170
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC86LA100
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34170/pdf
- Page: https://openairdocs.org/ntsb/MKC86LA100

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - on ground/water, landing - roll
  - weather condition - crosswind (contributing factor)
  - in-flight planning/decision - improper, pilot in command (contributing factor)
  - overconfidence in personal ability, pilot in command (contributing factor)
  - compensation for wind conditions - inadequate, pilot in command (cause)
- Nose over, landing - roll
  - lack of total experience in type of aircraft, pilot in command (contributing factor)

## Analysis

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.

## Aircraft

- Registration: [N66F](https://openairdocs.org/deregistered/N66F-2013-04-09), registration cancelled 2013-04-09, S/N 25010, built 1952 (OpenAirDocs)
- Reported make and model: CESSNA 170B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 25010
- Airframe hours: 3040
- Engines: CONTINENTAL C145-2 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Richard A. Bonci
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Departed: LCG, WAYNE, NE
- Destination: MXO, MONTICELLO, IA
- Airport: MXO, Monticello Muni, runway 13, 3,500 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 54; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 127 total, 7 in this make and model, 97 as pilot in command, 6 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 15 knots, gusting 22
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 46 °F
- Altimeter: 29.00 inHg
- Observed at: CID, 38 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19860504017729A](https://openairdocs.org/incident/19860504017729A), May 4, 1986: Cessna 170B, Monticello, IA, Substantial damage. Failed to correct for gusty winds during landing rollout. Aircraft was flipped over. Exceeded crosswind.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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