Aircraft Accident/Incident Report

Samoa, California 95564
Sunday, July 4, 1993 14:53 PDT

NTSB Narrative Summary Released at Completion of Accident

SEVERAL WITNESSES REPORTED THAT THE AIRPLANE, WHICH HAS A REAR MOUNTED ENGINE, SEEMED TO BE HAVING SOME DIFFICULTY WITH CONTROLLABILITY DUE TO THE HIGH WINDS IN THE AREA. THE CONSENSUS WAS THAT THE AIRPLANE APPEARED TO ENTER A STALL, AND THEN IT SPUN SEVERAL TIMES BEFORE IMPACTING THE GROUND. THE AIRCRAFT BALLISTIC PARACHUTE SYSTEM WAS MANUALLY DEPLOYED BY THE PILOT, BUT DID NOT INFLATE BEHIND THE AIRPLANE. THE PARACHUTE WAS FOUND ENTANGLED IN THE CRANKSHAFT JUST FORWARD OF THE PROPELLER. THE PARACHUTE OWNERS MANUAL STATES THE ENGINE SHOULD BE STOPPED PRIOR TO DEPLOYMENT OF THE PARACHUTE. IT ALSO RECOMMENDS NOT DEPLOYING THE PARACHUTE IN 'STRONG WINDS OR CONVECTION', ALTHOUGH NO SPECIFIC GUIDELINES WERE FOUND FOR THE PILOT TO FOLLOW IN THE EVENT HE ENCOUNTERED SUCH PHENOMENA. A SENIOR TECHNICIAN WHO WORKED AT THE PARACHUTE MANUFACTURER APPROVED THE INSTALLATION OF THE PARACHUTE PER PHOTO DOCUMENTATION, AS REQUIRED BY THE MANUFACTURER. THE COMPANY COULD NOT PROVIDE A WRITTEN RECORD OF THE APPROVAL. THE MANUAL DOES NOT ADDRESS A MINIMUM RECOMMENDED ALTITUDE OR A MINIMUM SPEED FOR THE DEPLOYMENT OF THE PARACHUTE. POST CRASH INVESTIGATION FAILED TO FIND ANY PRE EXISTING FAILURE/MALFUNCTION OF THE PROPELLER OR POWERPLANT.

NTSB Probable Cause Narrative

THE INADVERTENT STALL OF THE AIRPLANE. FACTORS RELATED TO THIS ACCIDENT WERE: THE EMERGENCY PARACHUTE SYSTEM THAT WAS DEPLOYED BY THE PILOT, THE PARTIAL FAILURE OF THE PARACHUTE SURVIVAL EQUIPMENT TO DEPLOY PROPERLY, AND THE INSUFFICIENT INFORMATION PROVIDED BY THE AIRCRAFT PARACHUTE MANUFACTURER.

Event Information

Type of Event Accident
Event Date 7/4/1993
Event Day of the Week Sunday
Time of Event 1453
Event Time Zone Pacific Daylight Time
Event City SAMOA
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95564
Event Date Year 1993
Event Date Month 7
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 --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1459 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 10
Weather Observation Facility ID ACV
Elevation of weather observation facility 218
Distance of event from weather observation facility (units?) 14
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Unknown
Wind Speed (knots) 20
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 25
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 630
NTSB Notification Source --
NTSB Notification Date Jul 4 1993 12:00AM
NTSB Notification Time 1615
Fiche Number and/or location -used to find docket information 50274
Date of most recent change to record Dec 11 2000 1:28PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N410ZE
NTSB Number LAX93LA276
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CURTIS
Aircraft Model RANS S-12
Aircraft Series Identifier RANS S-12
Aircraft Serial Number 0591083
Certified Max Gross Weight 900
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection Jan 2 2000 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BISH, GREGORY KEITH
Aircraft Owner Street Address 2031 EICH ROAD
Aircraft Owner City EUREKA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 95503
Operator is an individual? --
Operator Name BISH, GREGORY KEITH
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 2031 EICH ROAD
Operator City EUREKA
Operator State CA
Operator Country
Operator Zip code 95503
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 No
Departure Airport Code 033
Departure City EUREKA
Departure State CA
Departure Country
Departure Time 1330
Departure Time Zone PDT
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 Cruise
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --