Sunday Creek Airpark Airport
Aircraft Accident/Incident Report

Miles City, Montana 59301
Sunday, May 14, 2006 11:30 MDT

NTSB Narrative Summary Released at Completion of Accident

The experimental amateur built airplane sustained substantial damage during an off-airport landing. The pilot reported that shortly after takeoff, approximately 250 feet above ground level (agl), the "reduction gear failed" and he was forced to land on a dirt road near the departure airstrip. During the landing, the airplane encountered tall vegetation and ground-looped resulting in substantial damage. Post accident inspection showed that the engine-to-propeller planetary style reduction gear housing was fractured. Further examination revealed that the center drive gear was damaged and heavy smearing was observed to the drive teeth. The reduction gear assembly was identified as a GRD 2000, manufactured by D&D Manufacturing. According to the pilot, D&D manufacturing is no longer in business. The pilot reported that he was not the aircraft's original owner/builder. The aircraft was powered by a 45-horsepower Cuyuna reciprocating gas engine.

NTSB Probable Cause Narrative

Failure of the engine to propeller reduction gearbox for undetermined reasons. High vegetation was a factor.

Event Information

Type of Event Accident
Event Date 5/14/2006
Event Day of the Week Sunday
Time of Event 1130
Event Time Zone Mountain Daylight Time
Event City Miles City
Event State MONTANA
Event Country --
Zipcode of the event site 59301
Event Date Year 2006
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 462507N
Event Location Longitude 1055312W
Event Location Airport SUNDAY CREEK AIRPARK
Event Location Nearest Airport ID MT29
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Unknown
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator --
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 20274
NTSB Notification Source FAA-ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Aug 29 2006 3:49PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N157VM
NTSB Number SEA06CA094
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 --
Aircraft Manufacturer's Full Name Harold Vander
Aircraft Model Avid Flyer
Aircraft Series Identifier --
Aircraft Serial Number 0157
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft --
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Dale L. Benti
Aircraft Owner Street Address --
Aircraft Owner City --
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Miles City
Operator State MT
Operator Country USA
Operator Zip code --
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 --
Departure Point Same as Event No
Departure Airport Code MT29
Departure City MILES CITY
Departure State MT
Departure Country USA
Departure Time --
Departure Time Zone --
Destination Same as Local Flt --
Destination Airport Code MT29
Destination City Miles City
Destination State MT
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 9 2006 9:12PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --