Sheridan County Airport
Aircraft Accident/Incident Report

Sheridan, Wyoming 82801
Wednesday, December 17, 2008 12:20 MST

NTSB Narrative Summary Released at Completion of Accident

During the preflight inspection the pilot noticed a small amount of hydraulic oil pooled by the trim wheel. In order to troubleshoot the problem, maintenance personnel removed the left front pilot's seat and then reinstalled it when the problem was resolved. After adding full power and during the takeoff roll the pilot's seat abruptly slid to the full back position, resulting in the airplane veering sharply to the left as the pilot's feet left the rudder pedals. In order to avoid taxi signs on the left side of the runway, the pilot rotated, but then heard something strike the airplane. Airborne, the pilot managed to get the seat forward, climb to pattern altitude, and land uneventfully. After securing the airplane the pilot noticed that the left front seat had not been reinstalled in the seat rail, but was resting on top of it. Damage to the airplane consisted of a propeller strike, a hole in the undercarriage, and damage to both horizontal stabilizers.

NTSB Probable Cause Narrative

Maintenance personnel's failure to reinstall the left front pilot's seat correctly, which resulted in the pilot's loss of control and subsequent impact with a taxiway sign.

Event Information

Type of Event Accident
Event Date 12/17/2008
Event Day of the Week Wednesday
Time of Event 1220
Event Time Zone Mountain Standard Time
Event City Sheridan
Event State WYOMING
Event Country --
Zipcode of the event site 82801
Event Date Year 2008
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 444609N
Event Location Longitude 1065849W
Event Location Airport Sheridan County Airport
Event Location Nearest Airport ID SHR
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 Weather Observation Facility
Time of the weather observation 1153 Mountain Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID SHR
Elevation of weather observation facility 4021
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation MST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) -5
Dew Point at event time (in degress fahrenheit) -13
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 24890
NTSB Notification Source Regional Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jan 6 2009 11:46AM
User who most recently changed record stam
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9619T
NTSB Number WPR09CA059
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 None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 210
Aircraft Series Identifier --
Aircraft Serial Number 57419
Certified Max Gross Weight 2900
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 11 2008 12:00AM
Airframe hours since last inspection --
Airframe Hours 3244
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Madewell Inc.
Aircraft Owner Street Address --
Aircraft Owner City Sheridan
Aircraft Owner State WY
Aircraft Owner Country USA
Aircraft Owner Zipcode 82801
Operator is an individual? No
Operator Name Daleray Madewell
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Sheridan
Operator State WY
Operator Country USA
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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) Business
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code SHR
Departure City Sheridan
Departure State WY
Departure Country USA
Departure Time 1220
Departure Time Zone MST
Destination Same as Local Flt --
Destination Airport Code DGW
Destination City Douglas
Destination State WY
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 6 2009 11:46AM
User who most recently changed record stam
Since inspection or accident Time of Accident
Event Location Runway Number and Location 23
Runway Length 5039
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --