Del-Tex Airport
Aircraft Accident/Incident Report

Olton, Texas 79064
Saturday, January 26, 1991 16:25 CST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT/MECHANIC HAD JUST COMPLETED AN ANNUAL 100 HOUR INSPECTION OF THE AIRPLANE, A BELLANCA 17 30A SUPER VIKING, AND THIS WAS TO BE A MAINTENANCE TEST FLIGHT PRIOR TO DELIVERY TO ITS OWNER, HIS BROTHER. ONE WITNESS SAW THE AIRPLANE MOMENTARILY IN A SLIGHT CLIMB AT ABOUT 1500 FEET AGL. WHEN HE SAW THE AIRPLANE AGAIN, IT WAS ABOUT 500 FEET AGL IN A NEAR VERTICAL DIVE. TWO SECONDS BEFORE IMPACT, THE RIGHT WING FOLDED BACK BUT DID NOT SEPARATE. HIS IMPRESSION WAS THE PILOT HAD DONE A SPLIT S OR WING OVER. ANOTHER WITNESS SAW THE AIRPLANE ABOUT 15 DEGREES PAST VERTICAL WITH THE RIGHT WING SHEARED OFF. THE PILOT, A FORMER AERIAL APPLICATOR, HAD BUILT AND REPORTEDLY PERFORMED AEROBATICS IN A PITTS S 2S SPECIAL.

NTSB Probable Cause Narrative

THE PILOT EXCEEDED THE DESIGN STRESS LIMITS OF THE AIRFRAME AND THE PERFORMANCE OF AEROBATICS AT AN ALTITUDE INSUFFICIENT FOR RECOVERY.

Event Information

Type of Event Accident
Event Date 1/26/1991
Event Day of the Week Saturday
Time of Event 1625
Event Time Zone Central Standard Time
Event City OLTON
Event State TEXAS
Event Country --
Zipcode of the event site 79064
Event Date Year 1991
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport DEL-TEX
Event Location Nearest Airport ID TS42
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 3800
Weather Briefing Completeness Unknown
Investigator's weather source Witness
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 16000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 8
Air Temperature at event time (in degrees celsius) 6
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 200
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 3186
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) 319
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 43414
Date of most recent change to record Dec 12 2000 9:12AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4035B
NTSB Number DEN91FA037
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 BELLANCA
Aircraft Model 17-30A
Aircraft Series Identifier 17-30A
Aircraft Serial Number 74-30720
Certified Max Gross Weight 3325
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 26 1991 12:00AM
Airframe hours since last inspection --
Airframe Hours 1509
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JOHN C. BOZEMAN
Aircraft Owner Street Address 1907 ELTON DR.
Aircraft Owner City PERRYTON
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 79070
Operator is an individual? --
Operator Name JOHN C. BOZEMAN
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
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) Ferry
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code TS42
Departure City OLTON
Departure State TX
Departure Country
Departure Time 1610
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code PVW
Destination City PLAINVIEW
Destination State TX
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 18
Runway Length 2640
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --