Aircraft Accident/Incident Report

Delta Junction, Alaska 99737
Thursday, July 28, 2005 12:30 AKD

NTSB Narrative Summary Released at Completion of Accident

The airline transport certificated pilot, flying in support of a public use operation, landed the helicopter at an off-airport site to pickup two passengers. After takeoff, the passengers told the pilot that the main rotor blades contacted a small tree during landing. Upon landing at his destination, the pilot inspected the blades, and found dents/scratches in the bottom skins of the blades. The blades were determined to be damaged beyond repair.

NTSB Probable Cause Narrative

The pilot's failure to maintain clearance from trees during the approach to landing, which resulted in the main rotor blades striking a tree. A factor associated with the accident was the tree.

Event Information

Type of Event Accident
Event Date 7/28/2005
Event Day of the Week Thursday
Time of Event 1230
Event Time Zone --
Event City Delta Junction
Event State ALASKA
Event Country --
Zipcode of the event site 99737
Event Date Year 2005
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 642306N
Event Location Longitude 1441636W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
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) --
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 6000
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 1.5
Air Temperature at event time (in degrees celsius) 14
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.92
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) 19453
NTSB Notification Source U. S. Department of the Interi
NTSB Notification Date Jul 29 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 25 2006 11:00AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office FAA Fairbanks FSDO-01

Aircraft Involved

Aircraft #1

Aircraft Registration Number C-GBUY
NTSB Number ANC05TA111
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name McDonnell Douglas
Aircraft Model 500D
Aircraft Series Identifier --
Aircraft Serial Number --
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
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 Jul 1 2005 12:00AM
Airframe hours since last inspection 58
Airframe Hours 14460
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Prism Helicopters Inc.
Aircraft Owner Street Address --
Aircraft Owner City Pitt Meadows
Aircraft Owner State --
Aircraft Owner Country --
Aircraft Owner Zipcode --
Operator is an individual? No
Operator Name U. S. Department of the Interior
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Anchorage
Operator State AK
Operator Country --
Operator Zip code 99502
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) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code --
Departure City Last Chance
Departure State AK
Departure Country USA
Departure Time 1230
Departure Time Zone ADT
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Delta Junction
Destination State AK
Destination Country USA
Specific Phase of Flight Landing - flare/touchdown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 18 2006 10:25AM
User who most recently changed record JOHB
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --