Sonoma County Airport
Aircraft Accident/Incident Report

Santa Rosa, California 95403
Monday, December 24, 2001 18:10 PST

NTSB Narrative Summary Released at Completion of Accident

The airplane collided with power lines and landed in a vineyard about 1 mile south of Sonoma County Airport (STS), Santa Rosa, California, during a forced landing following a loss of engine power. The pilot noted about 20 gallons of fuel in the left tank and 15 gallons in the right tank during preflight. He flew from Petaluma, California, to Lakeport, California. The pilot was cruising at 5,500 feet on the return to Petaluma and began a descent when he was abeam Santa Rosa. He was well past Santa Rosa when the engine began to run rough; the right fuel gauge indicated 5 to 7 gallons. He switched from the right tank to the left tank, which now indicated 10 to 15 gallons, and the engine ran smoother. He continued toward Petaluma at an altitude of 3,000 feet, but could not visually acquire the airport's rotating beacon. He tried to activate the pilot controlled runway lights, but still could not visually identify the airport. He decided to fly back to Sonoma County Airport. He lost and regained power five times as he headed to Sonoma County Airport. The Air Traffic Control Tower advised him that a vineyard was south of the airport. The pilot could not see the landing area because of the darkness, but headed toward the dark field. He contacted power lines just prior to touchdown, but landed upright in the vineyard. The airplane sustained substantial damage to the fuselage. The recovery agent did not observe any fuel in either tank, and no fuel drained out of the fuel lines when they were disconnected during disassembly for transport.

NTSB Probable Cause Narrative

The pilot's inadequate preflight and in-flight planning/decision resulting in miscalculation of fuel consumption, fuel exhaustion and loss of engine power. Factors were rough terrain in a vineyard, power lines in the landing area, and night time.

Event Information

Type of Event Accident
Event Date 12/24/2001
Event Day of the Week Monday
Time of Event 1810
Event Time Zone Pacific Standard Time
Event City SANTA ROSA
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95403
Event Date Year 2001
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport SONOMA COUNTY
Event Location Nearest Airport ID STS
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 180
Airport Elevation 125
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1753 Pacific Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID STS
Elevation of weather observation facility 125
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PST
Lighting Conditions Night
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) 6
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30.28
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 14037
NTSB Notification Source FAA
NTSB Notification Date Dec 24 2001 12:00AM
NTSB Notification Time 1858
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 30 2003 9:55AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-OAK-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1309M
NTSB Number LAX02LA055
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 Cessna
Aircraft Model T210M
Aircraft Series Identifier --
Aircraft Serial Number 21061943
Certified Max Gross Weight 3500
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 6
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 18 2000 12:00AM
Airframe hours since last inspection 114
Airframe Hours 4844
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WALTER C. KOHN
Aircraft Owner Street Address --
Aircraft Owner City MENLO PARK
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94025
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 No
Departure Airport Code 1O2
Departure City LAKEPORT
Departure State CA
Departure Country USA
Departure Time 1745
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code O69
Destination City PETALUMA
Destination State CA
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jun 28 2003 2:21PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --