Aviation Accident Final Report - National Transportation Safety Board
Additional Participating Entity:
Investigation Docket - National Transportation Safety Board:
Location: Athens, GA
Accident Number: ERA20CA171
Date & Time: 05/03/2020, 1050 EST
Registration: N231DW
Aircraft: Mooney M20K
Aircraft Damage: Substantial
Defining Event: Landing gear collapse
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal
Analysis
According to the pilot, while on approach, he lowered the airplane's landing gear and confirmed that the landing gear was down and locked by observing the panel and floor indicators in the cockpit; however, during the subsequent landing roll, the left main landing gear collapsed. The airplane veered off the left side of the runway into a ditch. Examination of the airplane revealed that the left wingtip spar was buckled, and the torque tubing associated with the left main landing gear was bent and broken. Review of the logbook records did not reveal any recent maintenance on the landing gear system. Due to the damage of the landing gear assembly, a landing gear retraction test or rigging check could not be performed.
Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The collapse of the left main landing gear for reasons that could not be determined based on the available information.
Findings
Aircraft Gear extension and retract sys - Malfunction
Not determined (general) - Unknown/Not determined
Factual Information
History of Flight
Landing Landing gear collapse (Defining event)
Pilot Information
Certificate: Private
Age:69, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s):None
Restraint Used: 3-point
Instrument Rating(s):Airplane
Second Pilot Present: No
Instructor Rating(s):None
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 10/04/2018
Occupational Pilot: No
Last Flight Review or Equivalent: 06/02/2018
Flight Time: (Estimated) 1340 hours (Total, all aircraft), 113.8 hours (Total, this make and model), 1248.4 hours (Pilot In Command, all aircraft), 3.4 hours (Last 90 days, all aircraft), 1 hours (Last 30 days, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Make: Mooney
Registration:N231DW
Model/Series: M20K No Series
Aircraft Category: Airplane
Year of Manufacture:
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 25-0144
Landing Gear Type: Retractable - Tricycle
Seats:4
Date/Type of Last Inspection: 11/02/2019, Annual
Certified Max Gross Wt.: 3131 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 6206 Hours as of last inspection
Engine Manufacturer: Continental
ELT: Installed, not activated
Engine Model/Series: TSIO-360 SER
Registered Owner: On file
Rated Power: 210 hp
Operator: On file
Operating Certificate(s) Held: None
Meteorological Information and Flight Plan
Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: AHN, 812 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 1051 EDT
Direction from Accident Site: 0°
Lowest Cloud Condition: Few / 2900 ft agl
Visibility: 10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 4 knots /
Turbulence Type Forecast/Actual: None / None
Wind Direction: Variable
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting: 29.86 inches Hg
Temperature/Dew Point: 27°C / 18°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Atlanta, GA (PDK)
Type of Flight Plan Filed: None
Destination: Athens, GA (AHN)
Type of Clearance: VFR
Departure Time: 1028 EDT
Type of Airspace: Class D
Airport Information
Airport: Athens/Ben Epps (AHN)
Runway Surface Type: Asphalt
Airport Elevation: 812 ft
Runway Surface Condition: Dry
Runway Used: 27
IFR Approach: None
Runway Length/Width: 6122 ft / 100 ft
VFR Approach/Landing: Full Stop; Traffic Pattern
Wreckage and Impact Information
Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 None
Latitude, Longitude: 33.948611, -83.325833 (est)
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