Individually Owned: 150,657
Corporate Owned: 137,281
Flagler County Airport
Aircraft Accident/Incident Report
Bunnell, Florida 32110
Friday, March 12, 2004 18:30 EST
NTSB Narrative Summary Released at Completion of Accident
While on an instructional flight, a bolt in the main rotor blade broke separating the blade from the hub. The blade struck the student pilot resulting in fatal injuries. The responding FAA inspector stated the on-scene investigation found the hub bar wing and rotor blade had separated from the hub bar due to the failure of the hub bar wing retaining bolt head. The NTSB material lab reported the bolt that retains the hub bar wing to the hub bar was fractured in the radius between the shank and the head. Presence of fatigue arrest marks covering approximately 90 percent of the cross-sectional area. The fatigue cracks initiated from multiple origins all the way around the outer diameter surface at the bases of the radius with the head. The head contacts that hub bar without the use of a washer. A product notice number 33 was issued by Rotary Air Force (RAF) on June 18, 2001, placing a 500 hour time change factor on RAF rotor blades and hub bar "until further notice". The product notice number 33 had not been accomplished on the accident gyroplane at the time of the accident. The owner/certified flight instructor (CFI) stated the blades had a total time of about 930 hours at the time of the accident, which about 430 of those hours were of airtime. He did remember getting some kind of notice through the mail, something about a 500 hours time on the blades but the notice was not clear and too vague. If it was mandatory, a notice wound be issued stating as such. The Owner/CFI added the blades on the accident gyroplane never experience a ground strike, but did have nicks and scrape marks on the blades. A representative of RAF contacted the owner/CFI about a month after product notice 33 was issued advising of the notice and informed him about internal damage and stress that occurs if the rotor blade contacts the ground and the nature of such damage, which are undetectable. The owner/CFI stated he and RAF have had conversations; however, those discussions were more about training issues and the amount of training time the students were receiving. None of those conversations were about RAF product notice number 33 or blade strikes.
NTSB Probable Cause Narrative
The owner/pilot mechanic's failure to comply with a manufacture notice to replace the rotor blades and hub bar assembly, resulting in a failure of the hub bar to hub bar wing attaching bolt and separation of a main rotor blade.
Event Information
| Type of Event | Accident |
| Event Date | 3/12/2004 |
| Event Day of the Week | Friday |
| Time of Event | 1830 |
| Event Time Zone | Eastern Standard Time |
| Event City | Bunnell |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 32110 |
| Event Date Year | 2004 |
| Event Date Month | 3 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 292802N |
| Event Location Longitude | 0811222W |
| Event Location Airport | Flagler County |
| Event Location Nearest Airport ID | X47 |
| 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 | 33 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1753 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | 315 |
| Weather Observation Facility ID | KDAB |
| Elevation of weather observation facility | 33 |
| Distance of event from weather observation facility (units?) | 19 |
| Time Zone of the weather observation | EST |
| 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) | 9 |
| Air Temperature at event time (in degrees celsius) | 19 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 90 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.16 |
| Density Altitude (feet) | 294 |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 18133 |
| NTSB Notification Source | FAA SE Reg Com Ctr. |
| NTSB Notification Date | Mar 12 2004 12:00AM |
| NTSB Notification Time | 1120 |
| 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 | Orlando FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N69EP |
| NTSB Number | MIA04LA058 |
| 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 | Ortmayer/Parson |
| Aircraft Model | none |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 69A |
| Certified Max Gross Weight | 1153 |
| Aircraft Category | Gyrocraft |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | Yes |
| 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 | Dec 1 2003 12:00AM |
| Airframe hours since last inspection | 13.8 |
| Airframe Hours | 917.5 |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | William R. Ortmayer |
| Aircraft Owner Street Address | 81 Brockton Ln. |
| Aircraft Owner City | Palm Coast |
| Aircraft Owner State | FL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 32137 |
| 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) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | X47 |
| Departure City | BUNNELL |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | 1800 |
| Departure Time Zone | EST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | -- |
| Destination State | -- |
| Destination Country | -- |
| Specific Phase of Flight | Taxi |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | May 20 2005 12:37PM |
| User who most recently changed record | KENJ |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 150 |
| Runway Length | 3000 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |