Marina Municipal Airport
Aircraft Accident/Incident Report

Marina, California 93908
Sunday, December 9, 2001 14:39 PST

NTSB Narrative Summary Released at Completion of Accident

About 800 feet above ground level during the airplane's roll out turn onto the final approach leg for landing, the right wing spar broke and the wing separated from the airplane. Thereafter, the airplane commenced an uncontrolled descent until impacting an open field. The pilot built the experimental airplane principally from wood and fabric components. A family member reported that the pilot had designed the "one of a kind" airplane and planned to compete for various speed and climb performance records for airplanes having gross weights less than 660 pounds. An examination of the separated right wing's internal structure revealed evidence of a preimpact fuel leak. Styrofoam-like material had been used inside the wing, and it was discolored from fuel. The accident occurred on the first flight since the pilot ground looped the airplane, during which mishap the right wing was damaged. Following the ground loop, fuel leaked from the right wing which weakened the wing's wood structure. The pilot maintained his airplane.

NTSB Probable Cause Narrative

the failure the right wing spar and the subsequent separation of the right wing. Contributing factors were the pilot's inadequate maintenance, and the weakened wing structure due to a preexisting fuel tank leak.

Event Information

Type of Event Accident
Event Date 12/9/2001
Event Day of the Week Sunday
Time of Event 1439
Event Time Zone Pacific Standard Time
Event City Marina
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93908
Event Date Year 2001
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 364017N
Event Location Longitude 1214449W
Event Location Airport Marina Municipal
Event Location Nearest Airport ID OAR
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 110
Airport Elevation 134
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1453 Pacific Standard Time
Direction of event from weather observation facility (degrees) 80
Weather Observation Facility ID SNS
Elevation of weather observation facility 84
Distance of event from weather observation facility (units?) 7
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height 3600
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 11
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 340
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.98
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
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) 15543
NTSB Notification Source FAA
NTSB Notification Date Dec 9 2001 12:00AM
NTSB Notification Time 1523
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 3 2004 1:28PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-FSDO San Jose, CA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N204ED
NTSB Number LAX02LA043
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Rominger
Aircraft Model Zic Zac Bird
Aircraft Series Identifier --
Aircraft Serial Number 765
Certified Max Gross Weight 630
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 5
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name David E. Rominger
Aircraft Owner Street Address --
Aircraft Owner City Marina
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 93933
Operator is an individual? No
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? --
Certified for Part 133 or 137 Operation --
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 OAR
Departure City Marina
Departure State CA
Departure Country USA
Departure Time 1432
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code OAR
Destination City Marina
Destination State CA
Destination Country USA
Specific Phase of Flight Approach - VFR pattern - final approach
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Mar 16 2004 1:19PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 29
Runway Length 3000
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --