Aircraft Accident/Incident Report

Livermore, California 94550
Thursday, May 19, 1994 17:54 PDT

NTSB Narrative Summary Released at Completion of Accident

THE AIRCRAFT HAD NOT FLOWN FOR 2 YEARS. BEFORE FLIGHT, A MECHANIC SAW EVIDENCE OF FUEL LEAKING AT DRAIN HOLES IN THE LEFT WING ROOT, JUST AFT OF THE MAIN CABIN DOOR. HE BROUGHT THIS TO THE ATTENTION OF THE PILOT-RATED PASSENGER, WHO SHORTLY THEREAFTER, DEPARTED IN THE AIRCRAFT WITH THE PILOT (PIC), THE AIRCRAFT OWNER & A PASSENGER/MECHANIC. ABOUT 14 MINUTES AFTER TAKEOFF, RADAR DATA SHOWED THE AIRCRAFT TRANSITIONING FROM A CLIMB TO A DESCENT, WHILE IN A 180 DEGREE TURN. ALSO, WITNESSES SAW SMOKE/FLAMES TRAILING FROM THE AIRCRAFT. SUBSEQUENTLY, THE AIRCRAFT IMPACTED TREES & POWER LINES, THEN IT CRASHED IN A SMALL FLAT FIELD IN HILLY TERRAIN. POST-CRASH EXAMINATION REVEALED MELTED ALUMINUM SPATTERS ON THE LEADING EDGE & UNDERSIDE OF THE LEFT HORIZONTAL STABILIZER. ALSO, 'FOCALIZED' FIRE DAMAGE WAS NOTED ON THE CABIN BEHIND THE DRAIN HOLES IN THE LEFT WING ROOT. TETRAHYDROCANNABINOL CARBOXYLIC ACID (MARIJUANA) WAS DETECTED IN THE PILOT-RATED PASSENGER'S BLOOD (0.004 UG/ML) & URINE (0.010 UG/ML).

NTSB Probable Cause Narrative

A FUEL SYSTEM LEAK, INADEQUATE PREFLIGHT BY THE PILOT (PIC), AND BY THE NON-FLYING PILOT/PASSENGER INTENTIONALLY ALLOWING OPERATION OF THE AIRCRAFT WITH A KNOWN DEFICIENCY (FUEL LEAK). A FACTOR RELATED TO THE ACCIDENT WAS: THE LACK OF SUITABLE TERRAIN FOR A FORCED LANDING.

Event Information

Type of Event Accident
Event Date 5/19/1994
Event Day of the Week Thursday
Time of Event 1754
Event Time Zone Pacific Daylight Time
Event City LIVERMORE
Event State CALIFORNIA
Event Country --
Zipcode of the event site 94550
Event Date Year 1994
Event Date Month 5
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1746 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 110
Weather Observation Facility ID LVK
Elevation of weather observation facility 397
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height 3500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 25
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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 4
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 1026
NTSB Notification Source --
NTSB Notification Date May 19 1994 12:00AM
NTSB Notification Time 1923
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:16AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N601MK
NTSB Number SEA94FA121
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 In-flight
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name AERO COMMANDER
Aircraft Model 500A
Aircraft Series Identifier 500A
Aircraft Serial Number 500A-1073
Certified Max Gross Weight 6250
Aircraft Category Airplane
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 7
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MELLOR, MICHELLE, M.
Aircraft Owner Street Address 2756 N. GREEN VALLEY PKWY #814
Aircraft Owner City HENDERSON
Aircraft Owner State NV
Aircraft Owner Country
Aircraft Owner Zipcode 89014
Operator is an individual? --
Operator Name MELLOR, MICHELE, M.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 2756 N. GREEN VALLEY PKWY #814
Operator City HENDERSON
Operator State NV
Operator Country
Operator Zip code 89014
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 Yes
Departure Point Same as Event No
Departure Airport Code HWD
Departure City HAYWARD
Departure State CA
Departure Country
Departure Time 1736
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 Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --