Individually Owned: 150,657
Corporate Owned: 137,281
Autauga County Airport
Aircraft Accident/Incident Report
Prattville, Alabama 36067
Sunday, October 21, 1990 17:05 CDT
NTSB Narrative Summary Released at Completion of Accident
DURING THE PREVIOUS 4 MOS, THE ENG WAS EXPERIENCING A HOTTER CYLINDER HEAD TEMP OF THE LT REAR CYLINDER THAN THE RT. THE ENG COWLING WAS MODIFIED TO CORRECT THIS BUT THE PROBLEM CONTINUED. THE CYLINDER HEADS WHICH WERE PREVIOUSLY REMOVED WERE INSTALLED THE DAY BEFORE THE ACCIDENT. THE ENG WAS RUN FOR 30 MINUTES WITH NO DISCREPANCIES NOTED. THE MORNING OF THE ACCIDENT, THE ACFT WAS SERVICED WITH FUEL, THE ENG WAS CHECKED, & THE ACFT WAS FLOWN TWICE AROUND THE TRAFFIC PATTERN. THE TEMP PROBLEM CONTINUED. ATTEMPTS TO CORRECT THIS WERE UNSUCCESSFUL DURING A SUBSEQUENT FLT AROUND THE PATTERN. THE RT SIDE OF THE COWLING WAS MODIFIED. THE FLT DEPARTED & AT AN ALT OF 500 FT, THE ACFT WAS OBSERVED IN AN UNCOORDINATED LT TURN. THE ACFT STALLED, DESCENDED LT WING LOW & CRASHED IN A FIELD. EXAM OF THE ACFT REVEALED NO FLT CONTROL MALFUNCTION. EXAM OF THE ENG REVEALED EVIDENCE OF A LEAN FUEL/AIR MIXTURE BUT THE REASON COULD NOT BE DETERMINED.
NTSB Probable Cause Narrative
THE PILOT'S FAILURE TO MAINTAIN AIRSPEED. FACTORS WERE UNDETERMINED LOSS OF ENGINE POWER AND LACK OF EXPERIENCE IN TYPE.
Event Information
| Type of Event | Accident |
| Event Date | 10/21/1990 |
| Event Day of the Week | Sunday |
| Time of Event | 1705 |
| Event Time Zone | Central Daylight Time |
| Event City | PRATTVILLE |
| Event State | ALABAMA |
| Event Country | -- |
| Zipcode of the event site | 36067 |
| Event Date Year | 1990 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | AUTAUGA COUNTY |
| Event Location Nearest Airport ID | IA1 |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 215 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1731 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 326 |
| Weather Observation Facility ID | MGM |
| Elevation of weather observation facility | 221 |
| Distance of event from weather observation facility (units?) | 10 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 12000 |
| Lowest Non-Ceiling Height | 5500 |
| 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) | 7 |
| Air Temperature at event time (in degrees celsius) | 26 |
| Dew Point at event time (in degress fahrenheit) | 16 |
| Wind Direction (degrees magnetic) | 110 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 1500 |
| 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 | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1859 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Oct 21 1990 12:00AM |
| NTSB Notification Time | 1900 |
| Fiche Number and/or location -used to find docket information | 43756 |
| Date of most recent change to record | Dec 12 2000 5:28PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N148DT |
| NTSB Number | MIA91FA014 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | DANIEL S. TAYLOR |
| Aircraft Model | SONERAI II LS |
| Aircraft Series Identifier | SONERAI II |
| Aircraft Serial Number | 0052LS |
| Certified Max Gross Weight | 1150 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | Yes |
| 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 | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | -- |
| ELT Installed | No |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | BIEBER, S.A./OLESEN J/GREEN,P |
| Aircraft Owner Street Address | 6 POLARIS DR. |
| Aircraft Owner City | MONTGOMERY |
| Aircraft Owner State | AL |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 36108 |
| Operator is an individual? | -- |
| Operator Name | OLESEN, JAMES T. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 6 POLARIS DR. |
| Operator City | MONTGOMERY |
| Operator State | AL |
| Operator Country | |
| Operator Zip code | 36108 |
| 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) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1700 |
| Departure Time Zone | CDT |
| 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 | Jan 2 2001 10:35AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 9 |
| Runway Length | 3499 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |