# NTSB SEA89LA022: Cessna 172, N6408G, Oregon City, OR, November 19, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 19, 1988, 11:15 local (19:15 UTC)
- Place: Oregon City, OR
- Coordinates: 45.319862, -122.519836 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.3199&lon=-122.5198&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 29, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40959
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA89LA022
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40959/pdf
- Page: https://openairdocs.org/ntsb/SEA89LA022

## Sequence of events

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

- Overrun, landing - roll
  - terrain condition - grass (contributing factor)
  - terrain condition - wet (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)
  - performance data - unavailable, manufacturer (contributing factor)
- On ground/water collision with object, landing - roll
  - object - fence (contributing factor)

## Analysis

THE PILOT WAS LANDING HIS AIRCRAFT ON A VERY WET 1,170 FOOT GRASS RUNWAY. THE PILOT WAS NOT ABLE TO STOP THE AIRCRAFT BEFORE IT COLLIDED WITH A FENCE AT THE END OF THE RUNWAY. ACCORDING TO THE MANUFACTURERS PERFORMANCE FIGURES, UNDER THE GIVEN TEMPERATURE AND WIND CONDITIONS, THE RUNWAY LENGTH REQUIRED ON DRY GRASS WOULD BE 740 FEET. ALTHOUGH NOT ADDRESSED IN THE PILOT OPERATORS HANDBOOK, DUE TO THE EXTREME VARIABLES, CESSNA AIRCRAFT COMPANY ENGINEERS STATED THAT WET GRASS WOULD INCREASE THE LANDING DISTANCE 100 TO 300%.

## Aircraft

- Registration: [N6408G](https://openairdocs.org/aircraft/N6408G), registered now, S/N 17273594, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17273594
- Airframe hours: 1339
- Engines: LYCOMING O-320-H2AD 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: J. Michael Read
- Registered owner: John Michael Read
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Last inspection: Annual, February 19, 1988, 22 hours before
- Departed: 3S2, AURORA, OR
- Airport: Neilson'S Airpark

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 399 total, 338 in this make and model, 3 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: 2,000 ft overcast
- Temperature: 50 °F

## 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 19881119051499A](https://openairdocs.org/incident/19881119051499A), Nov 19, 1988: Cessna 172N, Orgeon City, OR, Substantial damage. Tried to land on short wet grass runway. Unable to go around due to trees and unable to stop. Struck a wooden fence

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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