# NTSB DEN89LA072: Cessna 172RG, N9459D, Mayville, ND, February 6, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 6, 1989, 15:40 local (21:40 UTC)
- Place: Mayville, ND
- Coordinates: 47.500511, -97.319252 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.5005&lon=-97.3193&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 28, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 17669
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN89LA072
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17669/pdf
- Page: https://openairdocs.org/ntsb/DEN89LA072

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE AFTER TOUCHDOWN ON AN ICY RUNWAY. CONTRIBUTING TO THE ACCIDENT WAS IMPROPER ALIGNMENT WITH THE RUNWAY FOR TOUCHDOWN.

## 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
  - terrain condition - icy (contributing factor)
  - proper alignment - not obtained, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
  - weather condition - crosswind (contributing factor)
- On ground/water collision with object, landing - roll

## Analysis

WHEN LANDING ON A TOUCH-AND-GO THE PLT LANDED LEFT OF CENTERLINE AND DEPARTED THE LEFT SIDE OF THE RUNWAY INTO A SNOW BANK. RUNWAY CONDITIONS WERE ICY WITH A 10 KT CROSSWIND.

## Aircraft

- Registration: [N9459D](https://openairdocs.org/deregistered/N9459D-2010-03-25), registration cancelled 2010-03-25, S/N 172RG1173, built 1984 (OpenAirDocs)
- Reported make and model: CESSNA 172RG
- Registry model: [Cessna 172RG](https://openairdocs.org/model/cessna-172rg) (registry code 2072438) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 172RG1173
- Airframe hours: 3862
- Engines: LYCOMING O-360-F1A6 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: University Of North Dakota
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, December 19, 1988, 89 hours before
- Departed: GFK, GRAND FORKS, ND
- Destination: D56
- Airport: D56, Mayville, runway 18, 2,110 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 20; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 120 total, 9 in this make and model, 70 as pilot in command, 9 in the last 90 days, 9 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 10 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 16 °F, dew point 9 °F
- Altimeter: 30.00 inHg
- Observed at: GFK, 360 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 19890206001789A](https://openairdocs.org/incident/19890206001789A), Feb 6, 1989: Cessna 172RG, Mayville, ND, Substantial damage. Slid into a snowbank landing on a icy runway in a strong 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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