Individually Owned: 150,657
Corporate Owned: 137,281
Sierra Vista Muni Airport
Aircraft Accident/Incident Report
Sierra Vista, Arizona 85613
Saturday, September 11, 2010 9:30 MST
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that he had flown the airplane about 6 hours with the recently overhauled engine. During the accident flight, he performed touch-and-go landings and then went to an aerobatic area to perform flight maneuvers. During the maneuvers, he noted that the oil pressure was initially 65 to 70 psi, dropped to about 40 psi, and returned to 70 psi when the airplane was in inverted flight. He then did left and right 90-degree inverted turns. As he completed a steep turn, he noticed that the oil pressure was at 0 psi. Before he could react, the engine seized and stopped. The pilot made a successful landing on a road but had to negotiate around a 45-degree left bend; as the airplane rounded the curve, a vehicle traveling in the opposite direction collided with the left wing. Postaccident examination of the engine revealed that the connecting rod near cylinder Nos. 5 and 6 had failed when the engine seized. Further examination found that the shuttle valve, which controlled oil flow while the airplane was in inverted flight, had a triangular shaped shard of metal wedged under the remaining steel ball. This kept the ball from moving its full travel to the shut off position, resulting in a loss of lubrication to the engine.
NTSB Probable Cause Narrative
A loss of engine power due to metal debris contamination of the inverted oil system shuttle valve, which resulted in a disruption of oil flow and subsequent oil starvation.
Event Information
| Type of Event | Accident |
| Event Date | 9/11/2010 |
| Event Day of the Week | Saturday |
| Time of Event | 930 |
| Event Time Zone | Mountain Standard Time |
| Event City | Sierra Vista |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85613 |
| Event Date Year | 2010 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 292801N |
| Event Location Longitude | 1100021W |
| Event Location Airport | Sierra Vista Muni Airport |
| Event Location Nearest Airport ID | FHU |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 3 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 4719 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 853 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 360 |
| Weather Observation Facility ID | FHU |
| Elevation of weather observation facility | 4719 |
| Distance of event from weather observation facility (units?) | 3 |
| Time Zone of the weather observation | MST |
| 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) | 23 |
| Dew Point at event time (in degress fahrenheit) | 5 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 3 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.2 |
| 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) | 30342 |
| NTSB Notification Source | FAA AWP Operations Center |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Jul 31 2012 5:53PM |
| User who most recently changed record | coos |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N102EX |
| NTSB Number | WPR10LA454 |
| 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 | -- |
| Aircraft Manufacturer's Full Name | EXTRA FLUGZEUGBAU GMBH |
| Aircraft Model | EA-300 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 007 |
| Certified Max Gross Weight | 2895 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| 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 | Aug 2 2010 12:00AM |
| Airframe hours since last inspection | 6 |
| Airframe Hours | 2626 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | James S. Hanke |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Sierra Vista |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 85650 |
| Operator is an individual? | Yes |
| Operator Name | James S. Hanke |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | Sierra Vista |
| Operator State | AZ |
| Operator Country | USA |
| Operator Zip code | 85650 |
| 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 | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | FHU |
| Departure City | Sierra Vista |
| Departure State | AZ |
| Departure Country | USA |
| Departure Time | 850 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | FHU |
| Destination City | Sierra Vista |
| Destination State | AZ |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jul 31 2012 5:53PM |
| User who most recently changed record | coos |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |