Aircraft Accident/Incident Report

Yucca Valley, California 92284
Sunday, June 6, 1999 14:49 PDT

NTSB Narrative Summary Released at Completion of Accident

The owner/builder/pilot of a homebuilt experimental amphibian departed for a personal cross-country flight. About 32 minutes after departure the airplane was observed by witnesses flying north along a ridgeline in a desert area. The airplane made a sudden tight turn to the left and descended into the ground. A postaccident fire consumed the airframe and all engine accessories. One of four carbon fiber propeller blades was found separated from the propeller hub and free of impact damage. The other three blades were fire damaged. A detailed examination of the engine did not reveal any mechanical failure. A sheriff's helicopter pilot reported 'very turbulent and very rough' air above 100 feet agl. The density altitude was about 6,180 feet msl.

NTSB Probable Cause Narrative

A loss of control in flight for undetermined reasons that resulted in an in flight collision with terrain. A factor was turbulent weather conditions in mountainous/hilly terrain.

Event Information

Type of Event Accident
Event Date 6/6/1999
Event Day of the Week Sunday
Time of Event 1449
Event Time Zone Pacific Daylight Time
Event City YUCCA VALLEY
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92284
Event Date Year 1999
Event Date Month 6
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1550 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 170
Weather Observation Facility ID PSP
Elevation of weather observation facility 462
Distance of event from weather observation facility (units?) 16
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) 10
Air Temperature at event time (in degrees celsius) 33
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 130
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) 29
Density Altitude (feet) 6180
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) 1440
NTSB Notification Source --
NTSB Notification Date Jun 6 1999 12:00AM
NTSB Notification Time 1626
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 12 2000 11:39AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2485
NTSB Number LAX99LA209
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Blanco
Aircraft Model SEA HAWKER
Aircraft Series Identifier SEA HAWKER
Aircraft Serial Number 138
Certified Max Gross Weight 1600
Aircraft Category Airplane
Aircraft Registration Class Unknown
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
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 Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CORELL FRANK BLANCO
Aircraft Owner Street Address 706 N. CLEVELAND ST.
Aircraft Owner City OCEANSIDE
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 92054
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 No
Departure Airport Code HMT
Departure City HEMET
Departure State CA
Departure Country
Departure Time 1417
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code UNK
Destination City PARK CITY
Destination State UT
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
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 --