Red Bluff Municipal Airport
Aircraft Accident/Incident Report

Red Bluff, California 96080
Friday, August 18, 2006 16:42 PDT

NTSB Narrative Summary Released at Completion of Accident

The airplane experienced a loss of engine power after takeoff, made a forced landing, touched down on uneven terrain, and came to rest inverted. The pilot was on the fourth leg of a cross-country flight when the engine lost power on the initial climb-out about 200 feet agl. Investigators inspected the engine and found the exhaust valves for two of the cylinders stuck in the open position, with dark combustion deposits in the combustion chambers. Both of the exhaust valves exhibited purple discoloration consistent with thermal overheating damage. All four cylinders exhibited pink discoloration of the head and cooling fins in the vicinity of the exhaust ports, which is consistent with thermal overheating. The pilot reported that the engine had been running rough during the approach phase of the flight prior to the accident. The pilot flew the airplane a total distance of approximately 567 nm on the day of the accident. The previous 19.8 hours of the airplane were flown exclusively by the accident pilot. Just prior to the accident, the engine had undergone a 50-hour inspection, and had had a major overhaul 185 hours ago.

NTSB Probable Cause Narrative

The pilot's improper mixture leaning technique, which lead to thermal damage and seizure of the exhaust valves.

Event Information

Type of Event Accident
Event Date 8/18/2006
Event Day of the Week Friday
Time of Event 1642
Event Time Zone Pacific Daylight Time
Event City Red Bluff
Event State CALIFORNIA
Event Country --
Zipcode of the event site 96080
Event Date Year 2006
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 400903N
Event Location Longitude 1221508W
Event Location Airport Red Bluff Municipal Airport
Event Location Nearest Airport ID RBL
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0.5
Degrees magnetic from airport --
Airport Elevation 352
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1654 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID RBL
Elevation of weather observation facility 352
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation PDT
Lighting Conditions Day
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) 35
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.88
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 22713
NTSB Notification Source FAA
NTSB Notification Date Aug 18 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Dec 20 2007 6:59AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-SAC-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number C-GOBC
NTSB Number LAX06LA265
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model A150M
Aircraft Series Identifier --
Aircraft Serial Number A150-0659
Certified Max Gross Weight 1600
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Nov 1 2005 12:00AM
Airframe hours since last inspection 46.5
Airframe Hours 7352.8
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Jaime Bordes
Aircraft Owner Street Address --
Aircraft Owner City Delta, BC
Aircraft Owner State --
Aircraft Owner Country CA
Aircraft Owner Zipcode V4C 2W8
Operator is an individual? Yes
Operator Name Nicholas Bordes
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Delta, BC
Operator State --
Operator Country CA
Operator Zip code V4K 3G8
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 Yes
Departure Airport Code RBL
Departure City Red Bluff
Departure State CA
Departure Country USA
Departure Time 1642
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code SJC
Destination City San Jose
Destination State CA
Destination Country USA
Specific Phase of Flight Takeoff - initial climb
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 28 2007 5:17PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 15
Runway Length 5700
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --