View of Front of Engine and Gearbox 
Side View of Propeller Gearbox
Closeup of Propeller Gear The National Transportation Safety Board did not travel to the scene of this accident.
Federal Aviation Administration / Flight Standards District Office; Albuquerque, New Mexico
Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
http://registry.faa.gov/N904DB
Location: Los Lunas, NM
Accident Number: CEN18LA117
Date & Time: 02/17/2018, 1500 MST
Registration: N904DB
Aircraft: BLACK DONALD COZY III
Aircraft Damage: Substantial
Defining Event: Powerplant sys/comp malf/fail
Injuries: 1 None
Flight Conducted Under: Part 91: General Aviation - Personal
On February 17, 2018, about 1500 mountain standard time, a Cozy III experimental amateur-built airplane, N904DB, was substantially damaged during a forced landing after an in-flight propeller gearbox failure at the Mid Valley Airpark (E98), Los Lunas, New Mexico. The commercial pilot was not injured. The airplane was privately owned, and operated by the pilot as a Title 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed throughout the area and no flight plan was filed for the flight. The flight originated from E98 about 1400.
After flying uneventful for about 1 hour in the local area, the pilot set up for landing at E98. On downwind for runway 36, the propeller seized and the pilot executed a forced landing to runway 36. While turning on final approach, the pilot slightly overshot the runway and touched down hard on the right edge of the runway. The landing gear were sheared upon touchdown and the airplane sustained substantial damage to the right wing and center fuselage section.
Examination of the airplane revealed that the propeller gearbox was seized. Examination of the gearbox did not reveal any obvious reason for the seizure. Logbooks indicated that the airplane and engine total hours were about 13.4 since it's initial airworthiness certificate was issued on July 5, 2012.
Pilot Information
Certificate: Commercial
Age: 71, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): None
Restraint Used:
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: 09/06/2017
Occupational Pilot: No
Last Flight Review or Equivalent:
Flight Time: (Estimated) 1220 hours (Total, all aircraft), 13 hours (Total, this make and model), 1 hours (Last 24 hours, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Make: BLACK DONALD
Registration: N904DB
Model/Series: COZY III NO SERIES
Aircraft Category: Airplane
Year of Manufacture: 2011
Amateur Built: Yes
Airworthiness Certificate: Experimental
Serial Number: 64
Landing Gear Type: Tricycle
Seats: 4
Date/Type of Last Inspection: 07/05/2012, Continuous Airworthiness
Certified Max Gross Wt.:
Time Since Last Inspection: 13 Hours
Engines: 1 Reciprocating
Airframe Total Time: 13.4 Hours at time of accident
Engine Manufacturer: Mazda
ELT: Not installed
Engine Model/Series: Renesis 13B
Registered Owner: On file
Rated Power: 200 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: E80, 4550 ft msl
Distance from Accident Site: 10 Nautical Miles
Observation Time: 1455
Direction from Accident Site: 180°
Lowest Cloud Condition: Clear
Visibility: 10 Miles
Lowest Ceiling: None
Visibility (RVR):
Wind Speed/Gusts: 3 knots /
Turbulence Type Forecast/Actual: / None
Wind Direction: 250°
Turbulence Severity Forecast/Actual:
Altimeter Setting: 30.18 inches Hg
Temperature/Dew Point: -21°C / -6°C
Precipitation and Obscuration:
Departure Point: Los Lunas, NM (E98)
Type of Flight Plan Filed: None
Destination: Los Lunas, NM (E98)
Type of Clearance: None
Departure Time: 1400 MST
Type of Airspace:Class E
Airport Information
Airport: Mid Valley Airpark (E98)
Runway Surface Type: Asphalt
Airport Elevation: 4835 ft
Runway Surface Condition: Dry
Runway Used: 36
IFR Approach: None
Runway Length/Width: 4332 ft / 37 ft
VFR Approach/Landing: Forced Landing
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: 34.761111, -106.745000 (est)
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