Aircraft Accident/Incident Report

Mathis, Texas 78368
Sunday, October 24, 1999 17:52 CDT

NTSB Narrative Summary Released at Completion of Accident

According to witnesses traveling on an interstate highway, the amateur-built experimental airplane was observed flying 'very low' toward the east before turning to the south over the interstate. The airplane was observed in a 'continuous descent' and the witnesses 'thought that the airplane was attempting to land on the south-bound lanes of [the interstate].' The airplane's landing gear impacted a set of power lines running perpendicular to the interstate, veering the plane to the left. Subsequently, the airplane impacted another set of power lines and was 'flung nose down onto the north-bound lanes of [the interstate].' The witnesses stated that the airplane and an automobile collided and then slid off the road to the east. The wood and composite airplane was fragmented in several sections as it came to rest atop and adjacent to the car. A post accident examination of the engine did not reveal any anomalies that would have prevented its normal operation prior to the accident. Impact damage to the airframe destroyed the fuel system, precluding its examination.

NTSB Probable Cause Narrative

the pilot's failure to maintain clearance with the power lines while maneuvering.

Event Information

Type of Event Accident
Event Date 10/24/1999
Event Day of the Week Sunday
Time of Event 1752
Event Time Zone Central Daylight Time
Event City MATHIS
Event State TEXAS
Event Country --
Zipcode of the event site 78368
Event Date Year 1999
Event Date Month 10
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1751 Central Daylight Time
Direction of event from weather observation facility (degrees) 130
Weather Observation Facility ID CRP
Elevation of weather observation facility 43
Distance of event from weather observation facility (units?) 27
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 75
Dew Point at event time (in degress fahrenheit) 43
Wind Direction (degrees magnetic) 90
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 3
On Ground, Serious Injuries 1
Injury Total Fatal 2
Injury Total Minor 3
Injury Total None --
Injury Total Serious 1
Injury Total All 6
Investigating Agency NTSB
NTSB Docket Number (internal use) 10052
NTSB Notification Source --
NTSB Notification Date Oct 24 1999 12:00AM
NTSB Notification Time 1900
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jul 17 2001 8:35AM
User who most recently changed record MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N75JS
NTSB Number FTW00LA015
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 None
Aircraft Explosion None
Aircraft Manufacturer's Full Name STURGES
Aircraft Model SPEZIO SPORT
Aircraft Series Identifier SPEZIO SPO
Aircraft Serial Number 392
Certified Max Gross Weight 900
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 Jun 7 1999 12:00AM
Airframe hours since last inspection 36
Airframe Hours 278
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JOHN W. EPPERSON
Aircraft Owner Street Address P.O. BOX 585
Aircraft Owner City ORANGE GROVE
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 78372
Operator is an individual? --
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? 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) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code NONE
Departure City LAGARTO
Departure State TX
Departure Country
Departure Time 0
Departure Time Zone
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 Jun 27 2001 3:41PM
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 --