Aircraft Accident/Incident Report

Fort Worth, Texas 76036
Monday, April 12, 1993 7:00 CDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT WAS PERFORMING A SERIES OF UNLIMITED CATEGORY MANEUVERS. WITNESSES REPORTED THAT DURING AN INVERTED OVER THE TOP LOOPING TYPE OF MANEUVER, THE AIRPLANE ENTERED AN INVERTED FLAT SPIN. THE AIRPLANE IMPACTED THE TERRAIN INVERTED. THE PORTABLE FIRE EXTINGUISHER HAD BEEN SECURED BY TIEWRAPS TO THE LOWER COCKPIT SUPPORT TUBES FORWARD OF THE PILOT CONTROL STICK. A DENT ON THE SIDE OF THE FIRE EXTINGUISHER MATCHED THE DIAMETER OF THE SUPPORT TUBE NEAR THE RIGHT RUDDER PEDAL. METALLURGICAL EVALUATION OF BLACK SMUDGES ON EACH SIDE OF THE FIRE EXTINGUISHER AND THE PILOT'S SHOE SOLE WERE CHEMICALLY SIMILAR. PHYSICAL EVIDENCE INDICATED THE FIRE EXTINGUISHER CAME LOOSE DURING THE FLIGHT ROUTINE AND JAMMED BETWEEN THE SUPPORT TUBE AND THE PILOT'S RIGHT FOOT ON THE RUDDER PEDAL. SHOE MATTER WAS ALSO SMEARED ON THE OPPOSITE SIDE OF THE FIRE EXTINGUISHER.

NTSB Probable Cause Narrative

THE FIRE EXTINGUISHER IN THE COCKPIT CAME LOOSE AND JAMMED THE RIGHT RUDDER PEDAL.

Event Information

Type of Event Accident
Event Date 4/12/1993
Event Day of the Week Monday
Time of Event 700
Event Time Zone Central Daylight Time
Event City FORT WORTH
Event State TEXAS
Event Country --
Zipcode of the event site 76036
Event Date Year 1993
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
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 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1853 Central Daylight Time
Direction of event from weather observation facility (degrees) 30
Weather Observation Facility ID FTW
Elevation of weather observation facility 710
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation CDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 25000
Sky/Lowest/Cloud Conditions Thin Broken
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 17
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 772
NTSB Notification Source --
NTSB Notification Date Apr 12 1993 12:00AM
NTSB Notification Time 712
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:14PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N12RW
NTSB Number FTW93FA126
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 Unknown
Aircraft Explosion Unknown
Aircraft Manufacturer's Full Name WARD
Aircraft Model PITTS SPECIAL WSC-1
Aircraft Series Identifier PITTS SPEC
Aircraft Serial Number 1589048
Certified Max Gross Weight 1000
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 30 1992 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MACGUIRE, JOHN C.
Aircraft Owner Street Address 13012 OAK GROVE ROAD SOUTH
Aircraft Owner City BURLESON
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 76028
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 1900
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --