El Reno Municipal Airport
Aircraft Accident/Incident Report

El Reno, Oklahoma 73036
Tuesady, June 25, 2013 8:25 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot stated that the engine abruptly lost power while he was practicing instrument approaches under visual flight rules. His efforts to restore engine power were unsuccessful. The pilot subsequently executed a forced landing to the center median of a roadway. A postaccident examination revealed that the dual magneto assembly was not functioning properly. Although the magneto drive shaft operated during engine crankshaft rotation, the magneto points did not open as required. A teardown examination revealed that the magneto components were worn. In addition, the threaded inserts had lifted out of the mounting block. The magneto assembly was inspected less than 1 flight hour before the accident during an engine propeller strike inspection, and the magneto block, points, and cam were replaced at that time. The accident flight was the second flight since the inspection and maintenance work had been performed. Although the magneto points might have been misaligned due to the threaded insert lifting out of the mounting block, it is unlikely that such a discrepancy would have resulted in a loss of magneto function within such a short timeframe. The magneto failure caused the loss of engine power; however, the cause of the magneto failure could not be determined.

NTSB Probable Cause Narrative

A loss of engine power, which resulted from the failure of the magneto assembly for reasons that could not be determined during postaccident examinations.

Event Information

Type of Event Accident
Event Date 6/25/2013
Event Day of the Week Tuesday
Time of Event 825
Event Time Zone Central Daylight Time
Event City El Reno
Event State OKLAHOMA
Event Country --
Zipcode of the event site 73036
Event Date Year 2013
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 352822N
Event Location Longitude 0980021W
Event Location Airport El Reno Municipal
Event Location Nearest Airport ID RQO
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 5
Degrees magnetic from airport --
Airport Elevation 1420
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 853 Central Daylight Time
Direction of event from weather observation facility (degrees) 82
Weather Observation Facility ID PWA
Elevation of weather observation facility 1300
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation CDT
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) 7
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 20
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 20
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 25
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation --
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 33153
NTSB Notification Source FAA -- ASW ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jul 24 2014 4:39PM
User who most recently changed record sort
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N205MC
NTSB Number CEN13LA370
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 M20J
Aircraft Series Identifier --
Aircraft Serial Number 24-3012
Certified Max Gross Weight 2740
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Sep 1 2012 12:00AM
Airframe hours since last inspection 1
Airframe Hours 2600
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name RWH-AIR LLC
Aircraft Owner Street Address 3511 Silverside Rd Ste 105
Aircraft Owner City Wilmington
Aircraft Owner State DE
Aircraft Owner Country USA
Aircraft Owner Zipcode 19810-4902
Operator is an individual? Yes
Operator Name Roger M Walton
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Oklahoma City
Operator State OK
Operator Country USA
Operator Zip code 73139
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 PWA
Departure City Bethany
Departure State OK
Departure Country USA
Departure Time 730
Departure Time Zone CDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code PWA
Destination City Bethany
Destination State OK
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 24 2014 4:39PM
User who most recently changed record sort
Since inspection or accident Time of Accident
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --