Greenwood Lake Airport
Aircraft Accident/Incident Report

West Milford, New Jersey 07480
Friday, October 21, 2005 13:40 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot initiated the takeoff roll, and as the airplane accelerated, the pilot's seat slid back to its aft most limit. As a result, the airplane departed the runway, impacted bushes, and incurred substantial damage. A review of the airplane's maintenance logbooks revealed that a new set of seat rails had been installed in the airplane about 31 flight hours prior to the accident. Examination of the seat rails revealed that the inboard rail had been modified with the addition of 5 locking pin holes. The airplane was originally equipped with a single locking pin type seat; however, a dual locking pin type seat was installed. Selection of any seat position, other that the three most aft positions, resulted in partial engagement of a single locking pin, while the other locking pin rested on top of the opposite seat rail. This combination of seat and seat rails was improper.

NTSB Probable Cause Narrative

A loss of aircraft control as a result of the installation of an improper pilot seat which moved during the takeoff roll/run..

Event Information

Type of Event Accident
Event Date 10/21/2005
Event Day of the Week Friday
Time of Event 1340
Event Time Zone Eastern Daylight Time
Event City West Milford
Event State NEW JERSEY
Event Country --
Zipcode of the event site 07480
Event Date Year 2005
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 410741N
Event Location Longitude 0742048W
Event Location Airport Greenwood Lake Airport
Event Location Nearest Airport ID 4N1
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 --
Weather Briefing Completeness --
Investigator's weather source Unknown
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 --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Unknown
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency --
NTSB Docket Number (internal use) 19267
NTSB Notification Source EROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Feb 28 2006 12:35PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N46475
NTSB Number NYC06CA013
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion --
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 172K
Aircraft Series Identifier --
Aircraft Serial Number 17257293
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name V E C Corporation of Deleware
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name Greenwood Lake Flight Training
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City West Milford
Operator State NJ
Operator Country USA
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) Personal
Second Pilot on Board --
Departure Point Same as Event Yes
Departure Airport Code 4N1
Departure City West Milford
Departure State NJ
Departure Country USA
Departure Time --
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 4N1
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 22 2005 4:33PM
User who most recently changed record MUZD
Since inspection or accident --
Event Location Runway Number and Location 06
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --