Lamar Municipal Airport
Aircraft Accident/Incident Report

Lamar, Missouri 64759
Friday, August 21, 1998 15:45 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot said her landing in the tail wheel airplane was uneventful. During the landing roll, the airplane suddenly veered to the left while in a 3-point attitude. The pilot said right rudder did not stop the turn and the airplane ran off the runway edge and into a 4-foot deep ditch. The on-site investigation revealed that the left main landing gear's brake torque plate holes and torque pins were dry. The wheel would not rotate. According to the pilot, she had never experienced dragging brakes while flying the airplane.

NTSB Probable Cause Narrative

inadequate lubrication of the torque plate holes and torque pins by the mechanic who performed the airplane's last annual inspection.

Event Information

Type of Event Accident
Event Date 8/21/1998
Event Day of the Week Friday
Time of Event 1545
Event Time Zone Central Daylight Time
Event City LAMAR
Event State MISSOURI
Event Country --
Zipcode of the event site 64759
Event Date Year 1998
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport LAMAR MUNICIPAL AIRPORT
Event Location Nearest Airport ID LLU
Indicates whether the acc/inc occurred off or on an airport Unknown
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 1009
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1555 Central Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID JLN
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CDT
Lighting Conditions Not Reported
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 50
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1405
NTSB Notification Source --
NTSB Notification Date Aug 21 1998 12:00AM
NTSB Notification Time 1709
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Feb 23 2001 1:55PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1239Y
NTSB Number CHI98LA326
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire Unknown
Aircraft Explosion Unknown
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 150B
Aircraft Series Identifier 150B
Aircraft Serial Number 15059639
Certified Max Gross Weight 1500
Aircraft Category Airplane
Aircraft Registration Class Unknown
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 Jul 1 1998 12:00AM
Airframe hours since last inspection 13
Airframe Hours 3508
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name DIANA J. RICHARDS
Aircraft Owner Street Address 741 SE 10TH LANE
Aircraft Owner City JASPER
Aircraft Owner State MO
Aircraft Owner Country
Aircraft Owner Zipcode 64755
Operator is an individual? --
Operator Name DIANA J. RICHARDS
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 741 SE 10TH LANE
Operator City JASPER
Operator State MO
Operator Country
Operator Zip code 64755
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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 PTS
Departure City PITTSBURG
Departure State KS
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt crash at destination city
Destination Airport Code LLU
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Feb 23 2001 1:55PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 21
Runway Length 2905
Runway Width 40
Sight Seeing flight No
Air Medical Flight No
Medical Flight --