Falcon Field Airport
Aircraft Accident/Incident Report

Mesa, Arizona 85211
Saturday, September 1, 2007 15:46 MST

NTSB Narrative Summary Released at Completion of Accident

The gyrocopter collided with high vegetation and rough terrain during a forced autorotation following the in-flight separation of a propeller blade. The pilot reported that the muffler's mounting strap broke during cruise flight, which caused one composite pusher propeller blade to separate. The pilot autorotated to a forced landing in a ravine. During touchdown the gyrocopter rolled over upon impacting 5-foot-high bushes.

NTSB Probable Cause Narrative

Failure of the muffler's mounting strap and subsequent loss of engine power due to propeller blade separation during cruise flight. A contributing factor was the unsuitable terrain for a forced landing.

Event Information

Type of Event Accident
Event Date 9/1/2007
Event Day of the Week Saturday
Time of Event 1546
Event Time Zone Mountain Standard Time
Event City Mesa
Event State ARIZONA
Event Country --
Zipcode of the event site 85211
Event Date Year 2007
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 333042N
Event Location Longitude 1114154W
Event Location Airport Falcon Field
Event Location Nearest Airport ID FFZ
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 4
Degrees magnetic from airport --
Airport Elevation 1394
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) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
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 Docket Number (internal use) 22406
NTSB Notification Source FAA
NTSB Notification Date Sep 1 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 29 2007 8:02AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Scottsdale, AZ

Aircraft Involved

Aircraft #1

Aircraft Registration Number N546SW
NTSB Number LAX07CA262
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 --
Aircraft Manufacturer's Full Name Wessel
Aircraft Model Vortex
Aircraft Series Identifier --
Aircraft Serial Number MEW061
Certified Max Gross Weight --
Aircraft Category Gyrocraft
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
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 --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Marvin E. Wessel, Jr.
Aircraft Owner Street Address --
Aircraft Owner City Chandler
Aircraft Owner State AZ
Aircraft Owner Country USA
Aircraft Owner Zipcode 85226
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Chandler
Operator State AZ
Operator Country USA
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 Yes
Departure Airport Code FFZ
Departure City Mesa
Departure State AZ
Departure Country USA
Departure Time 1315
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code FFZ
Destination City Mesa
Destination State AZ
Destination Country USA
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 4 2007 2:18PM
User who most recently changed record COOS
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --