Aircraft Accident/Incident Report

Lexington, Kentucky 40502
Friday, September 29, 2006 13:30 EDT

NTSB Narrative Summary Released at Completion of Accident

After the airplane reached its cruising altitude of 3,000 feet, the engine lost power. The pilot cycled the magnetos and applied carburetor heat; however, engine power was not regained. The pilot then performed a forced landing to a field, during which the airplane impacted a fence. Examination of the engine revealed the magnetos did not produce spark when tested. The magnetos were disassembled and it was noted that the left magneto had a shorted condenser and the right magneto points were almost closed. The right magneto points were properly adjusted; the magneto was tested and produced spark. According to the aircraft maintenance records, the magnetos were last overhauled 40 years prior to the accident, and had accumulated 500 hours of operation since then.

NTSB Probable Cause Narrative

The failure of both magnetos which resulted in a loss of engine power during cruise flight.

Event Information

Type of Event Accident
Event Date 9/29/2006
Event Day of the Week Friday
Time of Event 1330
Event Time Zone Eastern Daylight Time
Event City Lexington
Event State KENTUCKY
Event Country --
Zipcode of the event site 40502
Event Date Year 2006
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 380754N
Event Location Longitude 0835630W
Event Location Airport --
Event Location Nearest Airport ID --
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 --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1254 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 290
Weather Observation Facility ID LEX
Elevation of weather observation facility 979
Distance of event from weather observation facility (units?) 12
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 4900
Lowest Non-Ceiling Height 4200
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) 10
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) 5
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.06
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) 22819
NTSB Notification Source LOU FSDO
NTSB Notification Date Oct 3 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 LOU FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N397A
NTSB Number NYC06LA231
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Mooney
Aircraft Model M-18L
Aircraft Series Identifier --
Aircraft Serial Number 58
Certified Max Gross Weight 780
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 1
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 1160
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Stephen Lowther
Aircraft Owner Street Address --
Aircraft Owner City Clearwater
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 33756
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 Yes
Departure Airport Code I39
Departure City Lexington
Departure State KY
Departure Country USA
Departure Time 1300
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code I39
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 8 2007 2:29PM
User who most recently changed record MUZD
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --