Vernonia Municipal Airport
Aircraft Accident/Incident Report

Vernonia, Oregon 97064
Saturday, May 29, 2004 10:05 PDT

NTSB Narrative Summary Released at Completion of Accident

The instructor pilot, who was performing a simulated engine out forced landing as a demonstration for his student, allowed the aircraft's airspeed to remain too fast while on final approach to the 2,940 foot grass strip. Because the airspeed was faster than he desired, during the flare, the aircraft began to float further down the runway than where he had planned to touch down. The instructor pilot was unable to get the aircraft to touch down until approximately 1,000 feet down the runway. After touchdown on the wet grass, he attempted to stop the aircraft before it reached the end of the runway, but he was unable to do so before the aircraft went off the far end. After departing the runway, the aircraft collided with a nearby fence post.

NTSB Probable Cause Narrative

The instructor pilot's misjudgment of speed and distance and his failure to execute a go-around resulting in an overrun of the runway.

Event Information

Type of Event Accident
Event Date 5/29/2004
Event Day of the Week Saturday
Time of Event 1005
Event Time Zone Pacific Daylight Time
Event City Vernonia
Event State OREGON
Event Country --
Zipcode of the event site 97064
Event Date Year 2004
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 455109N
Event Location Longitude 1231420W
Event Location Airport Vernonia Municipal
Event Location Nearest Airport ID 05S
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 647
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 3000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 160
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 17228
NTSB Notification Source FAA Operations Center
NTSB Notification Date May 29 2004 12:00AM
NTSB Notification Time 1115
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jan 27 2005 3:52PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Portland FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5440H
NTSB Number SEA04LA096
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172M
Aircraft Series Identifier --
Aircraft Serial Number 17265438
Certified Max Gross Weight 2300
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Apr 4 2004 12:00AM
Airframe hours since last inspection --
Airframe Hours 9406
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Twin Oaks Airpark
Aircraft Owner Street Address 12405 SW River Rd.
Aircraft Owner City Hillsboro
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97123
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Instructional
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code 7S3
Departure City Twin Oaks A/P
Departure State OR
Departure Country USA
Departure Time 905
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code 05S
Destination City Vernonia
Destination State OR
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Last Inspection
Event Location Runway Number and Location 27
Runway Length 2940
Runway Width 45
Sight Seeing flight No
Air Medical Flight No
Medical Flight --