FTW91DRG06

NTSB accident investigation · Questair Venture · San Marcos, TX · July 24, 1991

Accident · FatalFinal report
Date
July 24, 1991, 10:25 local (15:25 UTC)
Place
San Marcos, TX
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Approach
Aircraft
N7PZQuestair Venture
Weather
Visual (VMC) · Day
Status
Completed · report January 25, 1993
Report
Approved by Office Director
FAA report
19910724030179A
Case key
23233

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's failure to maintain flying airspeed resulting in a stall.

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 flightApproach - vfr pattern - base leg/base to final
Airspeed - not maintainedPilot in command
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The private pilot was performing a maintenance test flight in the traffic pattern of his home base airport in his experimental airplane. After departing from the runway, the airplane was observed in a left turn on base to final approach. Eyewitnesses stated that the airplane continued to bank left and tightened the turn before it nosed over out of control to impact the ground. Several witnesses monitored an exemplar flight during the investigation and noted that the accident airplane appeared to be slower in the pattern compared to the demonstration airplane. No mechanical anomalies were found to any airplane system during the investigation by the FAA coordinator.

Aircraft

Registration
N7PZ
Reported as
Questair Venture
Category
Airplane, amateur-built
Serial number
21
Airframe hours
35
Engine
Continental IO-550-G1B, 280 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Frank Brantley Scott
Registered owner
Frank Brantley Scott
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 24, 1991 · 35 hours before
Departed
T98

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
62
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Toxicology
Performed
Flight hours
4,770 total · 35 in this make and model · 3,670 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Visibility
20 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point 72 °F

FAA reports on this event · 1

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