Sanderson Field Airport
Aircraft Accident/Incident Report

Shelton, Washington 98584
Saturday, August 7, 1982 14:03 PDT

NTSB Narrative Summary Released at Completion of Accident

DURING A SIGHT SEEING FLIGHT THE PILOT SMELLED A BURNING ODOR AND PREPARED TO MAKE A PRECAUTIONARY OFF-AIRPORT LANDING. SHORTLY THEREAFTER, ENGINE RPM DECAYED AND AN AUTOROTATIVE LANDING WAS EFFECTED ON A DIRT ROAD. ON TOUCHDOWN, THE MAIN ROTOR BLADES FLEXED DOWNWARD, STRIKING THE TAIL BOOM AND SEPARATING IT FROM THE FUSELAGE. THE INVESTIGATION REVEALED THETURBINE-TO-COMPRESSOR COUPLING WAS BOUND TO THE POWER TURBINE SHAFT WHICH SLEEVES IT. THERE WAS EVIDENCE OF THERMAL AND MECHANICAL DISTRESS TO THE COMPONENTS, CAUSED BY OVER-HEATING AND COKING OF THE OIL.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 8/7/1982
Event Day of the Week Saturday
Time of Event 1403
Event Time Zone Pacific Daylight Time
Event City SHELTON
Event State WASHINGTON
Event Country --
Zipcode of the event site 98584
Event Date Year 1982
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport SANDERSON FIELD
Event Location Nearest Airport ID SHN
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Unknown
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 90
Dew Point at event time (in degress fahrenheit) 0
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1809
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N10966
NTSB Number SEA82DA137
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 369D
Aircraft Series Identifier 369D
Aircraft Serial Number 1000818D
Certified Max Gross Weight 3550
Aircraft Category Helicopter
Aircraft Registration Class Unknown
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 36
Airframe Hours 1259
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name OLYMPIC AIR, INC.
Aircraft Owner Street Address 11771 HWY 101
Aircraft Owner City SHELTON
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98584
Operator is an individual? --
Operator Name OLYMPIC AIR, INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 11771 HWY 101
Operator City SHELTON
Operator State WA
Operator Country
Operator Zip code 98584
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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 SHN
Departure City SHELTON
Departure State WA
Departure Country
Departure Time 1400
Departure Time Zone
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code SHN
Destination City SHELTON
Destination State WA
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 18 2002 4:50PM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --