Missoula International Airport
Aircraft Accident/Incident Report

Missoula, Montana 59801
Thursday, May 12, 2005 15:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot, who landed on Runway 25, was cleared by the tower to turn off the runway at Taxiway Echo 4. While attempting to make the right-hand turn onto the taxiway, the pilot inadvertently turned too soon, and the aircraft collided with the runway identification sign near the intersection of the runway and the taxiway. The force of the impact resulted in the right main gear leg attachment box being bent and distorted. According to the pilot, there was nothing wrong with the aircraft's directional control system or brakes.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from a taxiway identification sign as he attempted to turn off the runway onto the taxiway during the last part of the landing roll. Factors include a taxiway identification sign in the vicinity of the intersection of the runway and the taxiway.

Event Information

Type of Event Accident
Event Date 5/12/2005
Event Day of the Week Thursday
Time of Event 1500
Event Time Zone Mountain Daylight Time
Event City Missoula
Event State MONTANA
Event Country --
Zipcode of the event site 59801
Event Date Year 2005
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 465459N
Event Location Longitude 1140526W
Event Location Airport Missoula International
Event Location Nearest Airport ID KMSO
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 3200
Weather Briefing Completeness --
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 --
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) 18
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 270
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) 18386
NTSB Notification Source FAA Operations Center
NTSB Notification Date May 13 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 13 2005 12:54PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Helena FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7866Z
NTSB Number SEA05LA100
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 152TW
Aircraft Series Identifier --
Aircraft Serial Number 59966
Certified Max Gross Weight 1500
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Sep 1 2004 12:00AM
Airframe hours since last inspection 66
Airframe Hours 4139
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Jim C. Younkin
Aircraft Owner Street Address --
Aircraft Owner City Frenchtown
Aircraft Owner State MT
Aircraft Owner Country USA
Aircraft Owner Zipcode 59834
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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 52S
Departure City St. Ignatius
Departure State MT
Departure Country USA
Departure Time 1445
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code KMSO
Destination City Missoula
Destination State MT
Destination Country USA
Specific Phase of Flight Landing - roll
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 22 2005 12:22PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 25
Runway Length 4612
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --