Aircraft Accident/Incident Report

Roseburg, Oregon 97470
Monday, March 11, 1991 14:15 PST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT REPORTED THAT THE HUGHES 369D WAS CRUISING BETWEEN 300 AND 500 FEET ABOVE THE SURFACE, WHEN HE HEARD A LOUD 'POP' AND THE ENGINE SPOOLED DOWN RAPIDLY. HE STATED THAT HE HAD NO PREVIOUS INDICATION OF A PROBLEM UNTIL THE ENGINE ABRUPTLY LOST POWER. HE INITIATED AN AUTOROTATION AND LANDED ON A SLOPED PORTION OF THE HIGHWAY. AFTER TOUCHDOWN, THE RIGHT SKID DROPPED APPROXIMATELY 20 INCHES AND THE MAIN ROTOR BLADES STRUCK THE TAILBOOM. NO PREIMPACT MECHANICAL DISCREPANCY WAS FOUND.

NTSB Probable Cause Narrative

A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. A FACTOR RELATED TO THE ACCIDENT WAS: THE LACK OF A SUITABLE AREA FOR AN EMERGENCY LANDING.

Event Information

Type of Event Accident
Event Date 3/11/1991
Event Day of the Week Monday
Time of Event 1415
Event Time Zone Pacific Standard Time
Event City ROSEBURG
Event State OREGON
Event Country --
Zipcode of the event site 97470
Event Date Year 1991
Event Date Month 3
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
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 1500
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 1
Dew Point at event time (in degress fahrenheit) -18
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) 30
Density Altitude (feet) 0
Intensity of Precipitation Light
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 3
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 584
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 44373
Date of most recent change to record Dec 12 2000 9:34AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1088L
NTSB Number SEA91LA066
Missing Aircraft Indicator N
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 HUGHES
Aircraft Model 369D
Aircraft Series Identifier 369D
Aircraft Serial Number 300678D
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GREGORY FOREST PRODUCTS
Aircraft Owner Street Address 303 MEHLWOOD LANE
Aircraft Owner City GLENDALE
Aircraft Owner State OR
Aircraft Owner Country
Aircraft Owner Zipcode 97442
Operator is an individual? --
Operator Name GREGORY FOREST PRODUCTS
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 303 MEHLWOOD LANE
Operator City GLENDALE
Operator State OR
Operator Country
Operator Zip code 97442
Operator Code
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code S21
Departure City SUNRIVER
Departure State OR
Departure Country
Departure Time 1330
Departure Time Zone PST
Destination Same as Local Flt --
Destination Airport Code
Destination City GLENDALE
Destination State OR
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --