# NTSB CHI87LA172: Cessna 170, N4649V, Lakeville, MN, July 17, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 17, 1987, 14:45 local (19:45 UTC)
- Place: Lakeville, MN
- Coordinates: 44.67097, -93.240638 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.6710&lon=-93.2406&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 31, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 13798
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI87LA172
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13798/pdf
- Page: https://openairdocs.org/ntsb/CHI87LA172

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - weather condition - unfavorable wind (contributing factor)
  - weather condition - crosswind (contributing factor)
  - weather condition - gusts (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - uncontrolled
- Nose over, takeoff - roll/run

## Analysis

THE PLT RPRTD THE WIND WAS VARYING PLUS OR MINUS 30 DEG FROM 200 DEG AT 10 GUSTING 25 KTS. DRG THE TAKEOFF ROLL ON RWY 29, THE ACFT ENCTRD A GUST OF WIND. THE ACFT SWERVED & THE PLT RECOVERED, BUT THE ACFT ENCTRD ANOTHER GUST WHICH RAISED THE LEFT WING. SUBSEQUENTLY, THE RGT WINGTIP CONTACTED THE GROUND & THE ACFT FLIPPED OVER.

## Aircraft

- Registration: [N4649V](https://openairdocs.org/deregistered/N4649V-2015-05-20), registration cancelled 2015-05-20, S/N 18051, built 1948 (OpenAirDocs)
- Reported make and model: CESSNA 170
- Registry model: [Cessna 170](https://openairdocs.org/model/cessna-170) (registry code 2072302) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18051
- Airframe hours: 3208
- Engines: CONTINENTAL C-145-2 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: R. Oehler
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 12, 1986, 22 hours before
- Destination: UNKNOWN
- Airport: Y12, Airlake, runway 29, 4,150 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 250 total, 27 in this make and model, 197 as pilot in command, 16 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 10 knots, gusting 25
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point -0 °F
- Altimeter: 30.00 inHg

## 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 19870717035319A](https://openairdocs.org/incident/19870717035319A), Jul 17, 1987: Cessna 170, Lakeville, MN, Substantial damage. Gusty wind caused a wing to hit the ground on takeoff roll. Plane then flipped over. Low time in tail wheel aircraft

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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