Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Konawa, Oklahoma 74849
Thursday, June 25, 1992 8:33 CDT
NTSB Narrative Summary Released at Completion of Accident
AS THE AIRPLANE WAS DEVIATING AROUND LOW INTENSITY WEATHER RETURNS, AND PASSING THROUGH 20,500 FT DURING CLIMB OUT, IT DEPARTED CONTROLLED FLIGHT AND ENTERED A RIGHT SPIRAL. DESCENT RATES EXCEEDED 16,600 FPM DURING THE DESCENT FROM 18,300 FT TO 3,900 FT AND THEN SLOWED. WITNESSES STATED THEY SAW THE AIRPLANE DESCEND FROM THE CLOUDS IN A RIGHT FLAP SPIN. THE EMPENNAGE HAD SEPARATED FROM THE AIRPLANE IN PIECES. PIECES OF THE WRECKAGE WERE FOUND UP TO 1.5 MI FROM THE PRIMARY IMPACT POINT. BOTH WINGS REMAINED ATTACHED. THE RIGHT ENGINE WAS FLAMED OUT, AND THE PROP WAS FEATHERED AT IMPACT. NO MECHANICAL REASON FOR THE FLAMEOUT COULD BE DETERMINED. AT NO TIME DID THE PILOT INDICATE HE WAS HAVING DIFFICULTIES. THE NTSB WEATHER STUDY INDICATED THAT MODERATE TURBULENCE WAS PRESENT IN THE AREA. THE PILOT'S TOXICOLOGY TESTS FOUND 0.151 UG/ML OF CHLORPHENIRAMINE IN THE BLOOD; NORMAL THERAPEUTIC CONCENTRATION IS 0.01 TO 0.04. EFFECTS OF OVERDOSAGE INCLUDE SEDATION, DIMINISHED MENTAL ALERTNESS, AND CARDIOVASCULAR COLLAPSE TO STIMULATION.
NTSB Probable Cause Narrative
THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE WHICH RESULTED IN AN INADVERTENT SPIRAL AND SUBSEQUENT RAPID DESCENT. THE DESIGN STRESS LIMITS OF THE AIRFRAME WERE EXCEEDED RESULTING IN AN OVERLOAD FAILURE OF THE EMPENNAGE. FACTORS RELATED TO THE ACCIDENT WERE: TURBULENCE AND THE PILOT'S PHYSICAL IMPAIRMENT DUE TO DRUGS.
Event Information
| Type of Event | Accident |
| Event Date | 6/25/1992 |
| Event Day of the Week | Thursday |
| Time of Event | 833 |
| Event Time Zone | Central Daylight Time |
| Event City | KONAWA |
| Event State | OKLAHOMA |
| Event Country | -- |
| Zipcode of the event site | 74849 |
| Event Date Year | 1992 |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 852 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 200 |
| Weather Observation Facility ID | ADM |
| Elevation of weather observation facility | 762 |
| Distance of event from weather observation facility (units?) | 35 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3400 |
| Lowest Non-Ceiling Height | 2000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0 |
| Air Temperature at event time (in degrees celsius) | 21 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 120 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 8 |
| 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 | Light |
| 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 | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2610 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jun 25 1992 12:00AM |
| NTSB Notification Time | 1110 |
| Fiche Number and/or location -used to find docket information | 47335 |
| Date of most recent change to record | Dec 11 2000 2:59PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N690JC |
| NTSB Number | FTW92FA169 |
| 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 | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Rockwell |
| Aircraft Model | 690B |
| Aircraft Series Identifier | 690B |
| Aircraft Serial Number | 11479 |
| Certified Max Gross Weight | 10250 |
| 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 | 11 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Mar 27 1992 12:00AM |
| Airframe hours since last inspection | 28 |
| Airframe Hours | 3355 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | PRIME INC. |
| Aircraft Owner Street Address | 2740 NORTH MAYFAIR |
| Aircraft Owner City | SPRINGFIELD |
| Aircraft Owner State | MO |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 65808 |
| Operator is an individual? | -- |
| Operator Name | AIRCRAFT SALES INTERNATIONAL |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 240 S.W. 34TH |
| Operator City | FORT LAUDERDALE |
| Operator State | FL |
| Operator Country | |
| Operator Zip code | 33315 |
| 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) | Ferry |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | OUN |
| Departure City | NORMAN |
| Departure State | OK |
| Departure Country | |
| Departure Time | 813 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | FLL |
| Destination City | FT. LAUDERDALE |
| Destination State | FL |
| Destination Country | |
| Specific Phase of Flight | Descent |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| 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 | -- |