Brighton Airport
Aircraft Accident/Incident Report

Brighton, Colorado 80601
Sunday, August 15, 2010 13:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The private pilot was preparing to land his gyroplane when he encountered a downdraft, which increased his rate of descent. The pilot was unable to arrest the descent rate and landed hard. As a result the left main gear axle broke, causing the lower rudder strut to contact the ground. The strut bent upwards into the propeller, splintering the propeller and causing substantial damage to the rudder. The pilot reported that the downdraft was caused by an 80-degree crosswind that blew over houses just to the northeast of the runway threshold. The pilot did not report any mechanical deficiencies with the gyroplane prior to the accident.

NTSB Probable Cause Narrative

The pilot's failure to maintain control of the gyroplane during landing.

Event Information

Type of Event Accident
Event Date 8/15/2010
Event Day of the Week Sunday
Time of Event 1330
Event Time Zone Mountain Daylight Time
Event City Brighton
Event State COLORADO
Event Country --
Zipcode of the event site 80601
Event Date Year 2010
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 395835N
Event Location Longitude 1044210W
Event Location Airport Brighton
Event Location Nearest Airport ID C)12
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 --
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) 27495
NTSB Notification Source DEN FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 23 2010 2:45PM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N36MR
NTSB Number CEN10CA528
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion --
Aircraft Manufacturer's Full Name CLEM WILLIAM B III
Aircraft Model DOMINATOR GYROCOPTER
Aircraft Series Identifier --
Aircraft Serial Number Y-001
Certified Max Gross Weight --
Aircraft Category Gyrocraft
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
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 Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CLEM WILLIAM B III
Aircraft Owner Street Address 14990 ECHO DR
Aircraft Owner City GOLDEN
Aircraft Owner State CO
Aircraft Owner Country USA
Aircraft Owner Zipcode 80401-1308
Operator is an individual? No
Operator Name CLEM WILLIAM B III
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 14990 ECHO DR
Operator City GOLDEN
Operator State CO
Operator Country USA
Operator Zip code 80401-1308
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) Personal
Second Pilot on Board --
Departure Point Same as Event Yes
Departure Airport Code C)12
Departure City Brighton
Departure State CO
Departure Country USA
Departure Time --
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code C)12
Destination City Brighton
Destination State CO
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 23 2010 11:27AM
User who most recently changed record broda
Since inspection or accident --
Event Location Runway Number and Location 30
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --