View of inverted airplane with damaged right wing lift strut and empennage. 
Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Fairbanks, Alaska
Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf
Investigation Docket - National Transportation Safety Board: https://dms.ntsb.gov/pubdms
https://registry.faa.gov/N9833M
Location: Fairbanks, AK
Accident Number: GAA19CA305
Date & Time: 05/30/2019, 1900 AKD
Registration: N9833M
Aircraft: Maule M4
Aircraft Damage: Substantial
Defining Event: Nose over/nose down
Injuries: 2 None
Flight Conducted Under: Part 91: General Aviation - Personal
Analysis
The pilot of the tailwheel-equipped airplane reported that, during landing on a gravel runway, he noticed that the airplane "floated slightly off of the center of the runway to the west." The airplane touched down with the left wheel off the runway in some vegetation, and the airplane nosed over.
Postaccident examination revealed that there were alder branches wrapped around the left main landing gear and that the landing gear was locked up. The pilot said he removed the branches, and the landing gear moved "fine."
The airplane sustained substantial damage to the right wing lift strut and empennage.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.
The pilot reported that the wind was from 090° and light and variable. The pilot landed the airplane on runway 33.
Probable Cause and Findings
The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's failure to maintain the runway centerline during landing, which resulted in the airplane landing with the left wheel off the runway, an impact with trees, and a nose-over.
Findings
Aircraft
Heading/course - Not attained/maintained (Cause)
Personnel issues
Aircraft control - Pilot (Cause)
Environmental issues
Tree(s) - Effect on operation
Factual Information
History of Flight
Landing
Abnormal runway contact (Defining event)
Nose over/nose down
Collision with terr/obj (non-CFIT)
Pilot Information
Certificate: Flight Instructor; Commercial; Military
Age: 39, Male
Airplane Rating(s): Single-engine Land
Seat Occupied: Left
Other Aircraft Rating(s): Glider
Restraint Used: Unknown
Instrument Rating(s): Airplane
Second Pilot Present: No
Instructor Rating(s): Airplane Single-engine; Instrument Airplane
Toxicology Performed: No
Medical Certification: Class 3 With Waivers/Limitations
Last FAA Medical Exam: 12/12/2018
Occupational Pilot: Yes
Last Flight Review or Equivalent: 09/25/2018
Flight Time: (Estimated) 4130 hours (Total, all aircraft), 10 hours (Total, this make and model), 3646 hours (Pilot In Command, all aircraft), 26 hours (Last 90 days, all aircraft), 19 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft)
Aircraft and Owner/Operator Information
Aircraft Make: Maule
Registration: N9833M
Model/Series: M4 210C
Aircraft Category: Airplane
Year of Manufacture: 1966
Amateur Built: No
Airworthiness Certificate: Normal
Serial Number: 1017C
Landing Gear Type: Tailwheel
Seats: 4
Date/Type of Last Inspection: 04/06/2019, Annual
Certified Max Gross Wt.: 2100 lbs
Time Since Last Inspection:
Engines: 1 Reciprocating
Airframe Total Time: 1767 Hours at time of accident
Engine Manufacturer: Continental
ELT: Installed, not activated
Engine Model/Series: IO-360-A
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:
Distance from Accident Site:
Observation Time:
Direction from Accident Site:
Lowest Cloud Condition:
Visibility: 10 Miles
Lowest Ceiling:
Visibility (RVR):
Wind Speed/Gusts: Light and Variable /
Turbulence Type Forecast/Actual: None / None
Wind Direction: 90°
Turbulence Severity Forecast/Actual: N/A / N/A
Altimeter Setting:
Temperature/Dew Point: 18°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: North Pole, AK (95Z)
Type of Flight Plan Filed: None
Destination: Fairbanks, AK (2AK1)
Type of Clearance: None
Departure Time: 1840 AKD
Type of Airspace: Class G
Airport Information
Airport: BLAIR LAKE (2AK1)
Runway Surface Type: Dirt; Gravel
Airport Elevation: 910 ft
Runway Surface Condition: Dry; Vegetation
Runway Used: 33
IFR Approach: None
Runway Length/Width: 1530 ft / 50 ft
VFR Approach/Landing: Full Stop
Wreckage and Impact Information
Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 64.360000, -147.360000 (est)
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