Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Frankfort, Illinois 60423
Tuesady, June 20, 1995 19:27 CDT
NTSB Narrative Summary Released at Completion of Accident
THE PRIVATE PILOT-OWNER WAS GIVING AEROBATIC INSTRUCTION TO ANOTHER PRIVATE PILOT. THE PILOT HAD THE SECOND PILOT PLACE THE AIRPLANE INTO INVERTED FLIGHT SO HE COULD SEE WHERE THE NOSE OF THE AIRPLANE SHOULD BE DURING AN AILERON ROLL. THE SECOND PILOT WAS FLYING THE AIRPLANE IN AN INVERTED ATTITUDE WITH FULL POWER AND HIGH RPM. HE TOLD THE SECOND PILOT TO ROLL OUT OF THE INVERTED FLIGHT. THE SECOND PILOT PULLED AFT ON THE CONTROL STICK AND DID A SPLIT-S MANEUVER. THE AIRSPEED WAS ABOVE THE NEVER EXCEED SPEED DURING ITS DESCENT. HE KNEW THIS BECAUSE HE HAD FLOWN ABOVE THAT SPEED BEFORE SO THAT HE COULD KNOW WHAT IT SOUNDED LIKE. AS HE BEGAN TO START RECOVERY THE RIGHT WING SEPARATED, AND WAS THE FIRST AIRFRAME COMPONENT ALONG THE WRECKAGE TRAIL. THE LEFT WING WAS THE SECOND ITEM ALONG THE WRECKAGE TRAIL, AND WAS MANGLED AND TWISTED. THE LEFT WING'S MAIN WING STRUT ATTACH FITTING HAD A FATIGUE STRIATION PATTERN THROUGH ABOUT 90% OF ITS AFT LEG. FATIGUE CRACKING WENT THROUGH ABOUT 25 PERCENT OF THE FITTING'S FORWARD LEG.
NTSB Probable Cause Narrative
the pilot-in-command's overconfidence in his personal ability in attempting to teach aerobatics, his lack of experience as a flight instructor, and allowing the airplane to get into a position where its never exceed speed and design stress limits were exceeded. The second pilot's improper maneuver was a factor.
Event Information
| Type of Event | Accident |
| Event Date | 6/20/1995 |
| Event Day of the Week | Tuesday |
| Time of Event | 1927 |
| Event Time Zone | Central Daylight Time |
| Event City | FRANKFORT |
| Event State | ILLINOIS |
| Event Country | -- |
| Zipcode of the event site | 60423 |
| Event Date Year | 1995 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1947 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 20 |
| Weather Observation Facility ID | MDW |
| Elevation of weather observation facility | 619 |
| Distance of event from weather observation facility (units?) | 20 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 32 |
| Dew Point at event time (in degress fahrenheit) | 19 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| 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) | 1826 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jun 20 1995 12:00AM |
| NTSB Notification Time | 2000 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 7 2000 4:19PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N109AC |
| NTSB Number | CHI95FA191 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Champion |
| Aircraft Model | 8KCAB |
| Aircraft Series Identifier | 8KCAB |
| Aircraft Serial Number | 652-91 |
| Certified Max Gross Weight | 1800 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| 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 | Apr 1 1995 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | ALPHA CHARLEY FLYING CLUB, INC |
| Aircraft Owner Street Address | 3415 PARTHENON WAY |
| Aircraft Owner City | OLYMPIA FIELDS |
| Aircraft Owner State | IL |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 60461 |
| Operator is an individual? | -- |
| 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? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| 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 | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 0 |
| Departure Time Zone | |
| 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 | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |