Aircraft Accident/Incident Report

Delta Junction, Alaska 99737
Saturday, March 6, 2010 12:55 AST

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he was in cruise flight when he heard a “pop” and the engine lost all power. He initiated an autorotation to a clearing, but was unable to reach it and had to land in an area with trees. The helicopter struck treetops during the descent and landed hard, sustaining structural damage. A postaccident inspection, including running the engine in a test cell, disclosed ample uncontaminated fuel, and no evidence of any preimpact mechanical problems with the helicopter’s engine or systems.

NTSB Probable Cause Narrative

A total loss of engine power in flight for undetermined reasons.

Event Information

Type of Event Accident
Event Date 3/6/2010
Event Day of the Week Saturday
Time of Event 1255
Event Time Zone Atlantic Standard Time
Event City Delta Junction
Event State ALASKA
Event Country --
Zipcode of the event site 99737
Event Date Year 2010
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 640519N
Event Location Longitude 1454736W
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 Weather Observation Facility
Time of the weather observation 1253 Atlantic Standard Time
Direction of event from weather observation facility (degrees) 161
Weather Observation Facility ID PABI
Elevation of weather observation facility 1291
Distance of event from weather observation facility (units?) 6
Time Zone of the weather observation AST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 3000
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) 10
Air Temperature at event time (in degrees celsius) -3
Dew Point at event time (in degress fahrenheit) -7
Wind Direction (degrees magnetic) 300
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 10
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.18
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 3
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 27855
NTSB Notification Source Anchorage FAA, ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Dec 29 2010 1:22AM
User who most recently changed record stam
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N26TC
NTSB Number ANC10LA020
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
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 MCDONNELL DOUGLAS HELICOPTER
Aircraft Model 369E
Aircraft Series Identifier --
Aircraft Serial Number 0489E
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats 3
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Feb 15 2010 12:00AM
Airframe hours since last inspection 19
Airframe Hours 10381
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name AURORA AVIATION SERVICES INC
Aircraft Owner Street Address PO BOX 110
Aircraft Owner City DELTA JUNCTION
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99737-0110
Operator is an individual? No
Operator Name AURORA AVIATION SERVICES INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address PO BOX 110
Operator City DELTA JUNCTION
Operator State AK
Operator Country USA
Operator Zip code 99737-0110
Operator Code KS1A
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation --
Operator Certificate Number KS1A502K
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code --
Departure City Healy
Departure State AK
Departure Country USA
Departure Time 1220
Departure Time Zone AST
Destination Same as Local Flt --
Destination Airport Code AK09
Destination City Delta Junction
Destination State AK
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 29 2010 1:22AM
User who most recently changed record stam
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --