Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
St Marys, West Virginia 26170
Wednesday, June 29, 1994 8:10 EDT
NTSB Narrative Summary Released at Completion of Accident
WHILE IN CRUISE FLIGHT AT 10,000 FEET MSL, THE AIRPLANE DEVIATED SLIGHTLY BELOW AND ABOVE THE ASSIGNED ALTITUDE, THEN IT ENTERED A RAPID DESCENT AND BROKE APART IN FLIGHT. AN INVESTIGATION REVEALED EVIDENCE OF AN IN-FLIGHT FIRE, BUT THE SOURCE OF THE FIRE WAS NOT VERIFIED. A POST-CRASH FIRE CONSUMED THE FORWARD FUSELAGE. A SUBSTANCE IDENTIFIED AS PVC-DOP WAS FOUND ON THE FORWARD UTILITY DOOR AND ON THE RIGHT HORIZONTAL STABILIZER. BOTH OF THESE HAD SEPARATED FROM THE FUSELAGE AND WERE FOUND WITH OTHER PIECES OF WRECKAGE THAT WERE SCATTERED OVER A 1/2 MILE AREA. THE PVC-DOP HAD BEEN DEPOSITED IN A 'MOLTEN STATE.' ANALYSIS OF THE PVC-DOP REVEALED THAT IT HAD A MELTING POINT OF 185 DEGREES CELSIUS. EXAMINATION OF THE WRECKAGE REVEALED THAT THE HORIZONTAL STABILIZER HAD FAILED IN NUMEROUS PIECES, AND THE WINGS HAD FAILED DOWNWARD WITH SEPARATION OCCURRING JUST OUTSIDE THE ENGINE NACELLES. BOTH WING SPARS EXHIBITED DOWNWARD DEFORMATION. NO PREACCIDENT ANOMALIES WERE FOUND WITH THE AIRFRAME OR ENGINES. PATHOLOGICAL EXAMINATIONS OF THE OCCUPANTS REVEALED SOOTING IN THEIR TRACHEA'S.
NTSB Probable Cause Narrative
AN IN-FLIGHT FIRE OF UNDETERMINED ORIGIN, PRIOR TO THE IN-FLIGHT BREAKUP.
Event Information
| Type of Event | Accident |
| Event Date | 6/29/1994 |
| Event Day of the Week | Wednesday |
| Time of Event | 810 |
| Event Time Zone | Eastern Daylight Time |
| Event City | ST MARYS |
| Event State | WEST VIRGINIA |
| Event Country | -- |
| Zipcode of the event site | 26170 |
| Event Date Year | 1994 |
| 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 | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 750 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 266 |
| Weather Observation Facility ID | PKB |
| Elevation of weather observation facility | 858 |
| Distance of event from weather observation facility (units?) | 15 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| 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) | 19 |
| Dew Point at event time (in degress fahrenheit) | 19 |
| Wind Direction (degrees magnetic) | 100 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| 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 | 3 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 332 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jun 29 1994 12:00AM |
| NTSB Notification Time | 1030 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Mar 17 2006 2:54PM |
| User who most recently changed record | NTSB\ZUZL |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N333TK |
| NTSB Number | BFO94FA121 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | In-flight |
| Aircraft Explosion | Unknown |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | 58TC |
| Aircraft Series Identifier | 58TC |
| Aircraft Serial Number | TK-36 |
| Certified Max Gross Weight | 5400 |
| 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 | Mar 7 1994 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | J.B. EXPRESS INC. |
| Aircraft Owner Street Address | 104 ROUNDTABLE |
| Aircraft Owner City | MCMURRAY |
| Aircraft Owner State | PA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 15317 |
| Operator is an individual? | -- |
| Operator Name | PHOENIX AVIATION |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | NO. 10 ALLEGHENY COUNTY ARPT. |
| Operator City | WEST MIFFLIN |
| Operator State | PA |
| Operator Country | |
| Operator Zip code | 15122 |
| 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) | Business |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | PIT |
| Departure City | PITTSBURGH |
| Departure State | PA |
| Departure Country | |
| Departure Time | 734 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | M54 |
| Destination City | LEBANON |
| Destination State | TN |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| 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 | -- |