Gravelly Valley Airport
Aircraft Accident/Incident Report

Upper Lake, California 95485
Saturday, July 18, 1987 14:36 PDT

NTSB Narrative Summary Released at Completion of Accident

A CESSNA 182Q STRUCK A DITCH ON THE LEFT SHOULDER OF RUNWAY 01 DURING A GO-AROUND. THE PLT INDICATED THAT HE PLANNED TO LAND ON RWY 01 BECAUSE OF PUBLISHED INSTRUCTIONS TO LAND ON RWY 01 AND TO TAKEOFF ON RWY 19. THE PLT MADE A GO-AROUND ON HIS 1ST APRCH AND ON HIS 2ND APRCH DURING THE LANDING ROLL THE AIRPLANE VEERED LEFT. THE PLT ELECTED TO GO-AROUND AS THE AIRCRAFT APPROACHED THE RUNWAY'S LEFT SHOULDER. THE NOSE GEAR THEN STRUCK A DITCH AND COLLAPSED. AFTER THE ACCIDENT, THE PLT NOTICED THAT THE WIND SOCKS AT EACH END OF THE 4,050 FT LONG BY 200 FT WIDE GRAVEL STRIP WERE INDICATING TWO DIFFERENT DIRECTIONS. THE WIND SOCK AT THE APPROACH END OF RWY 01 WAS INDICATING A TAILWIND. THE PLT STATED THAT HE TALKED TO SEVERAL HANG GLIDER PLTS WHO WERE OPERATING IN THE AREA AND THEY INDICATED THAT THE WINDS WERE SHIFTING THROUGHOUT THE DAY AND THAT THERE WERE NUMEROUS 'THERMALS.' THE PURPOSE OF THE FLT WAS TO CONDUCT CAP MISSION TRAINING.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/18/1987
Event Day of the Week Saturday
Time of Event 1436
Event Time Zone Pacific Daylight Time
Event City UPPER LAKE
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95485
Event Date Year 1987
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport GRAVELLY VALLEY AIRPORT
Event Location Nearest Airport ID 1Q5
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 1900
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1447 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 195
Weather Observation Facility ID UKI
Elevation of weather observation facility 614
Distance of event from weather observation facility (units?) 22
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 5000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) 3100
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 2343
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 36224
Date of most recent change to record Dec 13 2000 2:36PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N97061
NTSB Number LAX87LA274
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 182Q
Aircraft Series Identifier 182Q
Aircraft Serial Number 18266960
Certified Max Gross Weight 2800
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 16 1987 12:00AM
Airframe hours since last inspection 54
Airframe Hours 2282
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name CIVIL AIR PATROL, INC.
Aircraft Owner Street Address NATIONAL HEADQUARTERS
Aircraft Owner City MAXWELL AFB
Aircraft Owner State AL
Aircraft Owner Country
Aircraft Owner Zipcode 36112
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) Other Work Use
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code 069
Departure City PETALUMA
Departure State CA
Departure Country
Departure Time 1350
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code IQ5
Destination City UPPER LAKE
Destination State CA
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 1
Runway Length 4050
Runway Width 200
Sight Seeing flight No
Air Medical Flight No
Medical Flight --