NTSB Identification: CEN10CA528
14 CFR Part 91: General Aviation
Accident occurred Sunday, August 15, 2010 in Brighton, CO
Probable Cause Approval Date: 01/07/2011
Aircraft: CLEM WILLIAM B III DOMINATOR GYROCOPTER, registration: N36MR
Injuries: 1 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

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

Full narrative available

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