Flying B Airport
Aircraft Accident/Incident Report

Yelm, Washington 98597
Saturday, October 21, 2000 13:45 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot, who was aware that the engine on his gyroplane had not been producing the expected maximum full power, attempted a takeoff at an airstrip which had a marked power line just off the departure end of the runway. After liftoff, the aircraft climbed at a very shallow angle, and by the time it had proceeded more than 90 percent of the way down the runway, it had not climbed higher than the subject obstacle. Instead of aborting the takeoff, the pilot tried to increase the aircraft's angle of climb. As the gyroplane neared the end of the runway, it seemed to the pilot that its power output was decreasing, and he became convinced that he might not be able to clear the power line. He therefore attempted to fly under the marked line, but impacted an unmarked line strung lower on the poles.

NTSB Probable Cause Narrative

The pilot's failure to abort the takeoff when it became questionable as to whether the aircraft would be able to clear an object just off the departure end of the runway, and the pilot's failure to maintain clearance from the object as he attempted to continue the departure. Factors include operating with a known engine deficiency, and a power line strung just off the departure end of the runway.

Event Information

Type of Event Accident
Event Date 10/21/2000
Event Day of the Week Saturday
Time of Event 1345
Event Time Zone Pacific Daylight Time
Event City YELM
Event State WASHINGTON
Event Country --
Zipcode of the event site 98597
Event Date Year 2000
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport FLYING B
Event Location Nearest Airport ID 8WA0
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport 310
Airport Elevation 445
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 0
Lowest Non-Ceiling Height 3000
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
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) 16
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 3
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1021
NTSB Notification Source FAA Operations Center
NTSB Notification Date Oct 21 2000 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jul 2 2001 3:12PM
User who most recently changed record MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8331H
NTSB Number SEA01LA009
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 Hallett
Aircraft Model HALLETT-1
Aircraft Series Identifier HALLETT-1
Aircraft Serial Number 101
Certified Max Gross Weight 649
Aircraft Category Gyrocraft
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Aug 1 2000 12:00AM
Airframe hours since last inspection 6
Airframe Hours 10
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name THOMAS E. HALLETT
Aircraft Owner Street Address 5417 COLLINS RD. E
Aircraft Owner City PORT ORCHARD
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 98366
Operator is an individual? --
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 None
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 8WA0
Departure City
Departure State
Departure Country
Departure Time 1345
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 2 2001 4:09AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 31
Runway Length 2200
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --