DEN91FA037

NTSB accident investigation · Bellanca 17-30A · Olton, TX · January 26, 1991

Accident · FatalField investigationFinal report
Date
January 26, 1991, 16:25 local (22:25 UTC)
Place
Olton, TX
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N4035BBellanca 17-30A
Weather
Visual (VMC) · Day
Status
Completed · report May 5, 1993
Report
Approved by Office Director
FAA report
19910126000989A
Case key
18011

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot exceeded the design stress limits of the airframe and the performance of aerobatics at an altitude insufficient for recovery.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightDescent
Aerobatics - attemptedPilot in command
Design stress limits of aircraft - exceededPilot in commandCause
Wing - overload
In flight collision with terrain/waterDescent - uncontrolled
Terrain condition - open field
Altitude - inadequatePilot in commandCause

Analysis

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.

Aircraft

Registration
N4035B
Reported as
Bellanca 17-30A
Category
Airplane
Serial number
74-30720
Airframe hours
1,509
Engine
Continental IO-520-K, 300 horsepower, reciprocating
Damage
Destroyed
Flight
Ferry · Part 91
Operator
John C. Bozeman
Registered owner
John C. Bozeman
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 26, 1991
Departed
TS42 · Olton, TX
Destination
PVW · Plainview, TX
Airport
TS42 · Del-Tex, runway 18, 2,640 × 60 ft, dirt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
51
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
8,955 total

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 14 knots
Visibility
8 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
43 °F, dew point 28 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.