FTW87DRG01

NTSB accident investigation · Davis Pitts S-1S · Coleman, TX · April 11, 1987

Accident · FatalFinal report
Date
April 11, 1987, 15:00 local (20:00 UTC)
Place
Coleman, TX
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N90DWDavis Pitts S-1S
Weather
Visual (VMC) · Day
Status
Completed · report November 29, 1988
Report
Approved by Office Director
FAA report
19870411009019A
Case key
22209

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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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 flightManeuvering
Aerobatics - performedPilot in command
Descent - inadvertentPilot in commandCause
Spatial disorientationPilot in commandFactor
Pull-up - delayedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The pilot had completed several aerobatic maneuvers for an air show and was in the process of doing a series of five snap rolls at an altitude of 200-300 feet AGL when the accident occurred. Witnesses observed the nose of the acft to drop during the third snap roll and continue to drop during the fourth and fifth roll. After completion of the fifth roll the nose was observed to be almost straight down. The acft was then observed to start to recover but collided with the ground during the pull out.

Aircraft

Registration
N90DW
Reported as
Davis Pitts S-1S
Category
Airplane, amateur-built
Serial number
1940JD
Engine
Lycoming IO-360-A1A, 180 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Registered owner
Tennyson L. Wharton
Airworthiness certificate
Special, Experimental (Special)
Airport
COL · Coleman Municipal

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
31
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Center
Toxicology
Performed
Flight hours
640 total · 200 in this make and model · 600 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 15 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
84 °F

FAA reports on this event · 1

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