Individually Owned: 150,657
Corporate Owned: 137,281
Bowling Green Muni Airport
Aircraft Accident/Incident Report
Bowling Green, Missouri 63334
Saturday, June 24, 2006 8:15 CDT
NTSB Narrative Summary Released at Completion of Accident
The airplane was substantially damaged during a forced landing to a cornfield following a loss of engine power after takeoff. The pilot sustained serious injuries. Postaccident examination revealed that the number two cylinder exhaust valve had fractured at the transition radius between the valve stem and the valve head. The fracture surface exhibited arrest lines, and ratchet marks consistent with fatigue fracture initiating from multiple origins. The fatigue features had progressed across approximately 95 percent of the stem diameter. Measurements of the valve stem diameter, and the valve guide inside diameter indicated that the running clearance was 0.015 to 0.017 inch at the inboard end, and 0.007 to 0.013 at the outboard end. The maximum serviceable limit for valve stem to valve guide clearance was 0.007 inch.
NTSB Probable Cause Narrative
The loss of engine power due to fatigue fracture of the number two cylinder exhaust valve during initial climb after takeoff. A contributing factor was the unsuitable terrain (cornfield) encountered during the forced landing.
Event Information
| Type of Event | Accident |
| Event Date | 6/24/2006 |
| Event Day of the Week | Saturday |
| Time of Event | 815 |
| Event Time Zone | Central Daylight Time |
| Event City | Bowling Green |
| Event State | MISSOURI |
| Event Country | -- |
| Zipcode of the event site | 63334 |
| Event Date Year | 2006 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 392220N |
| Event Location Longitude | 0912208W |
| Event Location Airport | Bowling Green Muni |
| Event Location Nearest Airport ID | H19 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 2 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 886 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 824 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 260 |
| Weather Observation Facility ID | PPQ |
| Elevation of weather observation facility | 710 |
| Distance of event from weather observation facility (units?) | 2 |
| Time Zone of the weather observation | CDT |
| 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) | 21 |
| Dew Point at event time (in degress fahrenheit) | 15 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30.16 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR KPPQ 241304Z AUTO 06003KT 10SM CLR 20/15 A30 |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 21778 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jun 24 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jul 25 2007 12:22PM |
| User who most recently changed record | NTSB\lema |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | FAA-St. Louis FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N2890K |
| NTSB Number | CHI06LA165 |
| 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 | Luscombe |
| Aircraft Model | 8A |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 5617 |
| Certified Max Gross Weight | 1260 |
| 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 | Nov 1 2005 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1644 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Paul L. Wheeler |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Louisiana |
| Aircraft Owner State | MO |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 63353 |
| Operator is an individual? | Yes |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | H19 |
| Departure City | Bowling Green |
| Departure State | MO |
| Departure Country | USA |
| Departure Time | 813 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | PVT |
| Destination City | Mexico |
| Destination State | MO |
| Destination Country | USA |
| Specific Phase of Flight | Takeoff - initial climb |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jun 26 2007 4:33PM |
| User who most recently changed record | SULP |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | 31 |
| Runway Length | 3204 |
| Runway Width | 50 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |