Borrego Valley Airport
Aircraft Accident/Incident Report

Ranchita, California 92066
Saturday, February 3, 2007 18:38 PST

NTSB Narrative Summary Released at Completion of Accident

Recorded radar data indicated that after the airplane took off for the cross-country flight across a costal mountain range, it climbed to an altitude of 7,500 feet msl on a northeasterly course toward its intended destination, which was in a large valley on the other side of the mountains. As the flight neared the destination airport and while still over mountainous terrain, the target began a gradual descent as it continued on the northeasterly heading. The last radar return was at an altitude of 4,100 feet msl. The wreckage was located on a flat mountain plateau covered with large rocks and low vegetation. The first identified point of contact with the ground were black rubber marks noted on numerous rocks about 180 feet from the main wreckage. The main wreckage was at an elevation of 4,294 feet and the ground scars and wreckage signatures were consistent with the airplane contacting the ground in a near wings level attitude. The propeller exhibited signatures consistent with significant power production from the engine. Night visual meteorological conditions prevailed at the time. Moonrise occurred approximately 20 minutes after the accident. Weather reports from nearby aviation reporting stations depicted conditions of clear skies and visibilities equal to or greater than 10 miles over a wide area encompassing the accident site. Investigators found no evidence of preimpact mechanical malfunctions.

NTSB Probable Cause Narrative

The pilot's failure to maintain terrain clearance during a cruise descent. Contributing to the accident were the dark night lighting conditions and the mountainous terrain.

Event Information

Type of Event Accident
Event Date 2/3/2007
Event Day of the Week Saturday
Time of Event 1838
Event Time Zone Pacific Standard Time
Event City Ranchita
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92066
Event Date Year 2007
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 331016N
Event Location Longitude 1162526W
Event Location Airport BORREGO VALLEY
Event Location Nearest Airport ID L08
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 23
Degrees magnetic from airport --
Airport Elevation 520
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1852 Pacific Standard Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID RNM
Elevation of weather observation facility -115
Distance of event from weather observation facility (units?) 24
Time Zone of the weather observation PST
Lighting Conditions Night/Dark
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 9
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.23
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) 24260
NTSB Notification Source FAA
NTSB Notification Date Feb 3 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 26 2008 6:40PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office San Diego FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N201RV
NTSB Number LAX07FA080
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Mooney
Aircraft Model M20J
Aircraft Series Identifier --
Aircraft Serial Number 24-0256
Certified Max Gross Weight 2900
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
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 Annual
Date of Last Inspection Mar 1 2006 12:00AM
Airframe hours since last inspection 80
Airframe Hours 2994.5
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Yes
ELT Type --
Aircraft Owner Name Leon J. Thal
Aircraft Owner Street Address --
Aircraft Owner City Cardiff
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 92007
Operator is an individual? Yes
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 No
Departure Airport Code MYF
Departure City SAN DIEGO
Departure State CA
Departure Country USA
Departure Time 1815
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code L08
Destination City BORREGO SPRINGS
Destination State CA
Destination Country USA
Specific Phase of Flight Descent - normal
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 5 2008 5:58PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --