Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Vernon, Texas 76384
Saturday, May 16, 1998 7:50 CDT
NTSB Narrative Summary Released at Completion of Accident
According to witnesses, the twin-engine airplane took off and was climbing when a reduction in engine power was heard. The airplane was observed leveling off, and a left turn back to the airport was initiated. The airplane was observed in level flight for a few seconds and then it rolled to the left and impacted on a highway in a nose low attitude. A post impact fire destroyed the airplane. The logbooks for the airplane and engines were not made available during the investigation. The minimum controllable airspeed (Vmc) was listed at 76 mph in a brochure provided by the previous owner of the airplane. Examination of the left engine revealed that the #2 cylinder's exhaust valve had failed in fatigue. Closer examination of the exhaust valve and its guide revealed that a portion of the valve guide was missing. Carbon deposits on the valve stem provided evidence that the engine had been operated for some period of time in this condition. Examination of the left turbocharger revealed that it was not rotating at the time of the accident; however, its turbine wheel blades displayed foreign object damage, more than likely resulting from portions of the separated exhaust valve head passing through the turbocharger. Examination of the propellers revealed that neither propeller was in the feather position at the time of the impact, and the left propeller was being operated at no or low power at impact. The left propeller control lever was found in the aft (feather) position.
NTSB Probable Cause Narrative
The pilot's failure to maintain the airplane's minimum controllable airspeed following a loss of left engine power after takeoff, which resulted in a loss of control. Contributing factors were the fractured exhaust valve guide on the left engine's # 2 cylinder, the fatigue failure of the #2 cylinder's exhaust valve, and subsequent failure of the left engine's turbocharger resulting from foreign object damage.
Event Information
| Type of Event | Accident |
| Event Date | 5/16/1998 |
| Event Day of the Week | Saturday |
| Time of Event | 750 |
| Event Time Zone | Central Daylight Time |
| Event City | VERNON |
| Event State | TEXAS |
| Event Country | -- |
| Zipcode of the event site | 76384 |
| Event Date Year | 1998 |
| Event Date Month | 5 |
| 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 | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | 130 |
| Weather Observation Facility ID | SPS |
| Elevation of weather observation facility | 1019 |
| Distance of event from weather observation facility (units?) | 42 |
| Time Zone of the weather observation | -- |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 25000 |
| 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) | 17 |
| Dew Point at event time (in degress fahrenheit) | 9 |
| Wind Direction (degrees magnetic) | 150 |
| 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 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| 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 | 3 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 11867 |
| NTSB Notification Source | -- |
| NTSB Notification Date | May 16 1998 12:00AM |
| NTSB Notification Time | 1154 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 18 2002 10:15AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1885S |
| NTSB Number | FTW98FA216 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | VFR |
| Flight plan Was Activated? | Yes |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Beagle Aircraft |
| Aircraft Model | B-206 |
| Aircraft Series Identifier | B206 |
| Aircraft Serial Number | B206-073 |
| Certified Max Gross Weight | 7499 |
| 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 | 6 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jan 24 1998 12:00AM |
| Airframe hours since last inspection | 37 |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | BRADSON PROPERTIES |
| Aircraft Owner Street Address | BOX 703 1001 WILBARGER |
| Aircraft Owner City | VERNON |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 76385 |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | F05 |
| Departure City | -- |
| Departure State | -- |
| Departure Country | -- |
| Departure Time | 745 |
| Departure Time Zone | -- |
| Destination Same as Local Flt | -- |
| Destination Airport Code | AUS |
| Destination City | AUSTIN |
| Destination State | TX |
| Destination Country | USA |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | No |
| Date of most recent change to record | Oct 10 2002 3:48PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |