Individually Owned: 151,845
Corporate Owned: 143,699
Kissimmee Muni Airport
Aircraft Accident/Incident Report
Kissimmee, Florida 34741
Monday, May 9, 2005 16:20 EDT
NTSB Narrative Summary Released at Completion of Accident
The purpose of the flight was to familiarize the student pilot with the airplane within a 30-minute flight lesson, when the certified flight instructor demonstrated various flight and aerobatic maneuvers. Witnesses further observed the airplane enter a spin, and descended rapidly and collided with the ground. Post accident examination of the accident site revealed that the engine, propellers, main fuselage, left wing assembly, vertical and horizontal stabilizers were located in a crater 10-feet in diameter and 6-feet in depth. The right wing assembly was located 0.13 nautical miles on a 354-degree heading from the main wreckage site. No radio transmissions were received from the pilot prior to the accident. Post examination of the right wing revealed it separated due to the fatigue failure of the forward lower attach flange at the inboard side of the right wing attach joint. The fatigue fracture had a primary origin area at the lower surface of the horizontal leg of the flange at the outboard edge of the spot face for the fastener in the outboard fastener row located closest to the forward end of the flange. The fatigue crack propagated relatively slowly upward until it extended nearly through the thickness of the flange and was 2.3 inches long at the lower surface. Additionally slow-growth fatigue cracks were present at the outboard edges of other spot faces aft of the primary origin area. Beyond the slow-growth regions, the crack propagated relatively rapidly to a length of at least 12 inches aft of the forward end. Features associated with the more rapidly propagating portion of the fatigue region included relatively rough fracture features, crack arrest marks at up to 9.3 inches aft of the forward end, and wear between the fastener heads and the flange at distances up to 12 inches aft of the forward end. Subsequent to these findings the Federal Aviation Administration issued an Emergency Airworthiness Directive requiring fluorescent dye penetrant inspections of the wing attach flanges at intervals of 200 hours time in service.
NTSB Probable Cause Narrative
The failure of the outboard right-wing lower attachment bracket due to fatigue cracking and the subsequent in-flight separation of the right wing assembly.
Event Information
| Type of Event | Accident |
| Event Date | 5/9/2005 |
| Event Day of the Week | Monday |
| Time of Event | 1620 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Kissimmee |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 34741 |
| Event Date Year | 2005 |
| Event Date Month | 5 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | Yes |
| Event Location Latitude | 275854N |
| Event Location Longitude | 0813024W |
| Event Location Airport | KISSIMMEE MUNI |
| Event Location Nearest Airport ID | ISM |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 19 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 82 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1646 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 190 |
| Weather Observation Facility ID | KISM |
| Elevation of weather observation facility | 82 |
| Distance of event from weather observation facility (units?) | 19 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Scattered |
| 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) | 28 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 180 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 8 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.02 |
| 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) | 20089 |
| NTSB Notification Source | FAA Communication center |
| NTSB Notification Date | May 9 2005 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | May 30 2006 1:54PM |
| 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 | N453WA |
| NTSB Number | ATL05FA079 |
| 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 | None |
| Aircraft Manufacturer's Full Name | North American |
| Aircraft Model | SNJ-6 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 121-42823 |
| Certified Max Gross Weight | 5300 |
| 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 | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Apr 1 2005 12:00AM |
| Airframe hours since last inspection | 2320 |
| Airframe Hours | 7580 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Warbird Adventure Inc. |
| Aircraft Owner Street Address | 233 N. Hoagland Blvd. |
| Aircraft Owner City | Kissimmee |
| Aircraft Owner State | FL |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 34741 |
| 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 | -- |
| Departure Point Same as Event | Yes |
| Departure Airport Code | KISM |
| Departure City | Kissimmee |
| Departure State | FL |
| Departure Country | USA |
| Departure Time | 1600 |
| Departure Time Zone | EDT |
| 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 | Nov 7 2005 11:14AM |
| User who most recently changed record | POWP |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |