Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Calhoun, Tennessee 37309
Saturday, August 8, 2009 10:15 CDT
NTSB Narrative Summary Released at Completion of Accident
According to a witness, he observed the airplane climb straight up and then do a “cartwheel” and come straight down before leveling out. He watched as the airplane did this maneuver two more times. On the third time the airplane went straight up and flipped over backwards, and at about 200 feet above ground level started to spin before colliding with the ground. The airplane was not certificated for aerobatics. Examination of the airframe, engine and system components revealed no evidence of preimpact mechanical failure or malfunction. Toxicological testing detected a prescription painkiller, a prescription anti-nausea medication, and an over-the-counter antihistamine in specimens from the pilot. No blood was available, so it was not possible to estimate when the substances might have most recently been used or whether the pilot may have been impaired by one or more of the medications at the time of the accident. The pilot had neither noted the use of any medications nor the presence of any conditions requiring the use of medications at the time of his most recent application for a Federal Aviation Administration medical certificate.
NTSB Probable Cause Narrative
The pilot’s decision to perform aerobatics at a low altitude and his failure to maintain control of the airplane while performing aerobatics.
Event Information
| Type of Event | Accident |
| Event Date | 8/8/2009 |
| Event Day of the Week | Saturday |
| Time of Event | 1015 |
| Event Time Zone | Central Daylight Time |
| Event City | Calhoun |
| Event State | TENNESSEE |
| Event Country | -- |
| Zipcode of the event site | 37309 |
| Event Date Year | 2009 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 351618N |
| Event Location Longitude | 0844318W |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 953 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 210 |
| Weather Observation Facility ID | CHA |
| Elevation of weather observation facility | 874 |
| Distance of event from weather observation facility (units?) | 28 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 2500 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 27 |
| Dew Point at event time (in degress fahrenheit) | 21 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 4 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.24 |
| Density Altitude (feet) | -- |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 27596 |
| NTSB Notification Source | FAA Southern ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Oct 7 2010 1:14PM |
| User who most recently changed record | kenj |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N2456 |
| NTSB Number | ERA09LA450 |
| 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 | Stump Bradley |
| Aircraft Model | Kolb |
| Aircraft Series Identifier | M3X |
| Aircraft Serial Number | M3X6-4-00084 |
| Certified Max Gross Weight | 1060 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| 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 | Conditional |
| Date of Last Inspection | Mar 28 2009 12:00AM |
| Airframe hours since last inspection | 15 |
| Airframe Hours | 42 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | Bradley Stump |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Hamilton |
| Aircraft Owner State | TN |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 37341 |
| Operator is an individual? | No |
| Operator Name | Bradley Stump |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | Hamilton |
| Operator State | TN |
| Operator Country | USA |
| Operator Zip code | 37341 |
| 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 | No |
| Departure Airport Code | HDI |
| Departure City | Cleveland |
| Departure State | TN |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | HDI |
| Destination City | Cleveland |
| Destination State | TN |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Oct 7 2010 1:14PM |
| User who most recently changed record | kenj |
| 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 | -- |