Marco Island Airport
Aircraft Accident/Incident Report

Naples, Florida 34114
Sunday, May 26, 2013 11:30 EDT

NTSB Narrative Summary Released at Completion of Accident

About 5 minutes after takeoff and at a cruise altitude of 2,000 feet above ground level, the engine lost oil pressure and partial power. The pilot was unable to maintain the airplane’s altitude and flew toward a golf course to conduct a forced landing. During short final approach, he turned the airplane left to better align it with a fairway, but the airplane stalled and impacted a canal. The airplane was equipped with a noncertificated, modified automobile engine. Examination of the wreckage did not reveal any cracks in the engine case, oil residue in the engine compartment, or any abnormalities that would have accounted for the sudden loss of oil pressure and partial engine power.

NTSB Probable Cause Narrative

The pilot’s failure to maintain airspeed during a forced landing, which resulted in an aerodynamic stall. Contributing to the accident was a partial loss of the noncertificated engine’s power for reasons that could not be determined because examination of the engine did not reveal any mechanical malfunctions or failures that would have precluded normal operation.

Event Information

Type of Event Accident
Event Date 5/26/2013
Event Day of the Week Sunday
Time of Event 1130
Event Time Zone Eastern Daylight Time
Event City Naples
Event State FLORIDA
Event Country --
Zipcode of the event site 34114
Event Date Year 2013
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 260104N
Event Location Longitude 0814112W
Event Location Airport Marco Island Airport
Event Location Nearest Airport ID MKY
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 2
Degrees magnetic from airport 330
Airport Elevation 5
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1153 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 340
Weather Observation Facility ID APF
Elevation of weather observation facility 8
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3700
Sky/Lowest/Cloud Conditions Scattered
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) 31
Dew Point at event time (in degress fahrenheit) 20
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 15
Altimeter Setting at event time (in. Hg) 30.13
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 32420
NTSB Notification Source FAA Southern ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Mar 7 2014 8:17AM
User who most recently changed record kenj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N634SX
NTSB Number ERA13LA254
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 FLEMING ELDRIDGE E
Aircraft Model SONEX
Aircraft Series Identifier --
Aircraft Serial Number 0634
Certified Max Gross Weight 1000
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats 2
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 Conditional
Date of Last Inspection Apr 20 2013 12:00AM
Airframe hours since last inspection 3
Airframe Hours 37
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type Unknown
Aircraft Owner Name David Rynders
Aircraft Owner Street Address --
Aircraft Owner City Naples
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 34103
Operator is an individual? No
Operator Name David Rynders
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Naples
Operator State FL
Operator Country USA
Operator Zip code 34103
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 APF
Departure City Naples
Departure State FL
Departure Country USA
Departure Time 1125
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code IMM
Destination City Immokalee
Destination State FL
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 7 2014 8:17AM
User who most recently changed record kenj
Since inspection or accident Time of Accident
Event Location Runway Number and Location 17
Runway Length 5000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --