FTW91DPA02

NTSB accident investigation · Paul M. F. Walker Pitts S-1-C · Royse City, TX · June 29, 1991

Accident · Serious injuriesFinal report
Date
June 29, 1991, 13:40 local (18:40 UTC)
Place
Royse City, TX
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N4PWPaul M. F. Walker Pitts S-1-C
Weather
Visual (VMC) · Day
Status
Completed · report March 24, 1993
Report
Approved by Office Director
FAA report
19910629024799A
Case key
23189

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 performance of an aerobatic maneuver at an altitude too low to allow 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.

In flight collision with terrain/waterManeuvering
Aerobatics - performedPilot in commandCause
Altitude - inadequatePilot in commandCause
Nose overOther

Analysis

During climbout, just after takeoff, the pilot performed a snap roll. After the 360 degree snap roll, the airplane collided with the terrain, main landing gear first. The airplane nosed over, bounced, and came to rest semi-erect on the propeller.

Aircraft

Registration
N4PW
Reported as
Paul M. F. Walker Pitts S-1-C (PITTS S-1-)
Category
Airplane, amateur-built
Serial number
470H
Airframe hours
600
Engine
Lycoming O-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Ryan Brown Seals
Registered owner
Ryan Brown Seals
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · August 30, 1990 · 152 hours before
Airport
68TS · Bishop Field, runway 21, 3,500 × 30 ft, asphalt

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
71
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Front
Flight hours
7,800 total · 550 in this make and model · 7,800 as pilot in command · 20 in the last 90 days · 8 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
15 statute miles
Lowest ceiling
None
Temperature
91 °F, dew point -0 °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.