Aircraft Accident/Incident Report

Rollinsville, Colorado 80474
Wednesday, August 4, 2010 6:20 MDT

NTSB Narrative Summary Released at Completion of Accident

Forest service personnel discovered the wreckage of the airplane on the side of a narrow, wooded valley after reports of fire in the area. Ground scars and damage to adjacent trees were consistent with the airplane having struck trees before impacting the ground. One propeller blade was located 250 feet from the main wreckage. Damage to the propeller blade and blade hub was consistent with separation due to the impact with trees and indicative of little to no rotation at impact. Examination of the remaining airplane, engine, and related systems revealed no anomalies. No reason for a possible loss of engine power or the impact with terrain could be determined.

NTSB Probable Cause Narrative

A loss of engine power for undetermined reasons.

Event Information

Type of Event Accident
Event Date 8/4/2010
Event Day of the Week Wednesday
Time of Event 620
Event Time Zone Mountain Daylight Time
Event City Rollinsville
Event State COLORADO
Event Country --
Zipcode of the event site 80474
Event Date Year 2010
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 395533N
Event Location Longitude 1053826W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport --
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 555 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID EIK
Elevation of weather observation facility 5130
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
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) 16
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.32
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 29576
NTSB Notification Source US Forest Service
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jan 26 2012 2:21PM
User who most recently changed record bowl
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8974A
NTSB Number CEN10FA458
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 Ground
Aircraft Explosion --
Aircraft Manufacturer's Full Name BEECH
Aircraft Model C35
Aircraft Series Identifier --
Aircraft Serial Number D-2728
Certified Max Gross Weight 2700
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name HOWARD JOHN B
Aircraft Owner Street Address 1632 GROSBEAK AVE
Aircraft Owner City SUNNYVALE
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94087
Operator is an individual? No
Operator Name HOWARD JOHN B
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1632 GROSBEAK AVE
Operator City SUNNYVALE
Operator State CA
Operator Country USA
Operator Zip code 94087
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? No
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 BDU
Departure City Boulder
Departure State CO
Departure Country USA
Departure Time 600
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code SJC
Destination City San Jose
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 22 2012 8:46AM
User who most recently changed record gagc
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --