French Valley Airport
Aircraft Accident/Incident Report

Murrietta, California 92563
Wednesday, August 22, 2001 12:05 PDT

NTSB Narrative Summary Released at Completion of Accident

According to the operator who inspected the airplane and interviewed the instructor, the airplane was topped off with 13.4 gallons of aviation gasoline and placed in the maintenance shop just prior to the flight. The airplane received new tires and was released from the shop. No other maintenance was performed. The airplane departed at 1200 with full fuel tanks, which was 22.5 gallons of useable fuel. The instructor had stated that shortly after takeoff, about 1,000 feet, there was a "popping" sound from the engine followed by a loss of engine power. He repositioned the mixture and throttle controls, but with no effect. He stated that he pitched the airplane to attain best glide speed and initiated a forced landing procedure. The airplane landed in rough terrain and was nosed over. The entire back portion of the muffler was open. There was evidence of sooting and discoloration of the firewall directly behind the left muffler. The fuel input line leading from the gascolator to the carburetor was positioned between the aft end of the left muffler and the firewall. It was approximately 3 inches away from the open end of the muffler and was heated substantially when the back end of the muffler blew off. The heat most likely caused the fuel in the line to vaporize, resulting in vapor lock. The lack of altitude and time did not allow the engine to re-fire after the fuel in the line cooled off.

NTSB Probable Cause Narrative

The failure of the muffler assembly causing a fuel line to overheat, resulting in vapor lock, and a subsequent engine failure followed by an emergency landing in rough terrain.

Event Information

Type of Event Accident
Event Date 8/22/2001
Event Day of the Week Wednesday
Time of Event 1205
Event Time Zone Pacific Daylight Time
Event City Murrietta
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92563
Event Date Year 2001
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport French Valley
Event Location Nearest Airport ID F70
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 1200
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1155 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 327
Weather Observation Facility ID RIV
Elevation of weather observation facility 1538
Distance of event from weather observation facility (units?) 38
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 20000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) 9
Wind Direction (degrees magnetic) 350
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30.01
Density Altitude (feet) 2823
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 11596
NTSB Notification Source FAA
NTSB Notification Date Aug 22 2001 12:00AM
NTSB Notification Time 1250
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record May 14 2002 9:31AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-FSDO Riverside, CA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N63405
NTSB Number LAX01LA287
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 150M
Aircraft Series Identifier --
Aircraft Serial Number 77289
Certified Max Gross Weight 1600
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Aug 20 2001 12:00AM
Airframe hours since last inspection 4
Airframe Hours 8450
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name D&L Aircraft Aquisitions Inc
Aircraft Owner Street Address 3511 Silverside Rd.
Aircraft Owner City Wilmington
Aircraft Owner State MD
Aircraft Owner Country USA
Aircraft Owner Zipcode 91810
Operator is an individual? No
Operator Name Joe Diorio
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 37552 Winchester Rd.
Operator City Murrietta
Operator State CA
Operator Country USA
Operator Zip code 92563
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) Instructional
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code F70
Departure City Murrietta
Departure State CA
Departure Country USA
Departure Time 1200
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code AVX
Destination City Catalina
Destination State CA
Destination Country USA
Specific Phase of Flight Takeoff
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Feb 16 2002 2:54PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 36
Runway Length 4600
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --