N/A Airport
Aircraft Accident/Incident Report

Milo, Oregon 97429
Monday, October 28, 2013 11:45 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot stated that the purpose of the flight was for the two passengers, who were both biologists, to conduct a low-level river/land survey. Prior to departure, the pilot discussed the route of flight with the passengers and they all reviewed the maps and sectionals for possible hazards with an emphasis on wire crossings. After departure, the pilot attempted to facilitate the biologists' view out the windows by maneuvering the helicopter in a crab angle with the flight path tracking down the riverbank and the nose pointing left. The pilot maintained an altitude just above tree-top level and about an hour into the flight the pilot observed the first high power line crossing. Approximately 20 minutes thereafter, one of the passengers called attention to another line crossing, which was equipped with marker balls. The pilot stated that as they continued, the river divided into numerous channels and one of the passengers advised him which path to follow. After surveying one of the channels, he maneuvered the helicopter in a 90-degree turn to circle back and then it was decided they did not need to return to the channel's origin. The pilot then made a left turn to adjoin the river and immediately observed blue sparks and a wire contact on the upper windscreen bubble. The helicopter was substantially damaged after it descended and came to rest in 4.5 feet of water about 50 feet from the power line. The pilot reported no preimpact mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

NTSB Probable Cause Narrative

The pilot's failure to see and avoid wires while maneuvering at a low-altitude, which resulted in the main rotor blades striking the wires.

Event Information

Type of Event Accident
Event Date 10/28/2013
Event Day of the Week Monday
Time of Event 1145
Event Time Zone Pacific Daylight Time
Event City Milo
Event State OREGON
Event Country --
Zipcode of the event site 97429
Event Date Year 2013
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 425713N
Event Location Longitude 1230858W
Event Location Airport N/A
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 Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) 135
Weather Observation Facility ID RBG
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) 19
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height 1200
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) --
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 3
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 32594
NTSB Notification Source FAA Comm Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Apr 21 2014 7:11PM
User who most recently changed record stam
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N16673
NTSB Number WPR14CA052
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 206B
Aircraft Series Identifier B
Aircraft Serial Number 2088
Certified Max Gross Weight 3200
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats 4
Total number of seats on the aircraft 5
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Aug 21 2013 12:00AM
Airframe hours since last inspection 41
Airframe Hours 13741
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name FERREIRA ROBERT A
Aircraft Owner Street Address --
Aircraft Owner City ASHLAND
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 975200013
Operator is an individual? No
Operator Name Timberland Helicopters
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Ashland
Operator State OR
Operator Country USA
Operator Zip code 97520
Operator Code --
Owner has at least one certificate Yes - certificate holder
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) Aerial Observation
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code RBG
Departure City Roseburg
Departure State OR
Departure Country USA
Departure Time 1000
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code RBG
Destination City Roseburg
Destination State OR
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 21 2014 7:11PM
User who most recently changed record stam
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --