Aircraft Accident/Incident Report

Moclips, Washington 98562
Monday, December 8, 2003 11:35 PST

NTSB Narrative Summary Released at Completion of Accident

The helicopter lost engine power while the pilot was conducting long-line operations in support of a timber sale. Following the loss of engine power, the pilot performed an autorotation and competed a forced landing near the base of operations. During the landing, the helicopter sustained substantial damage to the fuselage and tail boom assembly. Post accident examination of the engine assembly revealed heavy black carbon like deposits throughout the turbine section. Additionally, extensive thermal type damage, to include metal splatter, was noted to the first and second stage turbine wheels and nozzles. A number of the turbine blade ends were melted away. Samples of the black carbon like deposits were taken from different locations throughout the turbine assembly and analyzed using Semi-quantitative X-ray Energy Dispersive Analysis. The post examination report concluded that black carbon like deposits were consistent with coked oil. There was no presence of jet fuel in the oil deposits. The origin of the oil could not be determined.

NTSB Probable Cause Narrative

A sudden loss of engine power during hover for undetermined reasons.

Event Information

Type of Event Accident
Event Date 12/8/2003
Event Day of the Week Monday
Time of Event 1135
Event Time Zone Pacific Standard Time
Event City Moclips
Event State WASHINGTON
Event Country --
Zipcode of the event site 98562
Event Date Year 2003
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 472200N
Event Location Longitude 1240400W
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1126 Pacific Standard Time
Direction of event from weather observation facility (degrees) 135
Weather Observation Facility ID KHQM
Elevation of weather observation facility 18
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height 300
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 7
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.2
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 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 17823
NTSB Notification Source FAA-ROC
NTSB Notification Date Dec 8 2003 12:00AM
NTSB Notification Time 1200
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 8 2005 12:51PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Seattle, Washington

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8343F
NTSB Number SEA04LA025
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 133: Rotorcraft Ext. Load
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 Hughes
Aircraft Model 369D
Aircraft Series Identifier --
Aircraft Serial Number 1160020D
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
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 Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Nov 29 2003 12:00AM
Airframe hours since last inspection 22
Airframe Hours 7449
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Eagle Air Inc.
Aircraft Owner Street Address PO Box 1555
Aircraft Owner City Forks
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 98331
Operator is an individual? No
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation External Load
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) Unknown
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Moclips
Departure State WA
Departure Country USA
Departure Time 1130
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City Moclips
Destination State WA
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record --
User who most recently changed record --
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --