Arlington Muni Airport
Aircraft Accident/Incident Report

Arlington, Washington 98223
Thursday, June 27, 2002 15:45 PDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that on the accident flight, he initially performed a hover and 360-degree pedal turn without problems. He stated that he then entered forward flight at 10 MPH, and then transitioned back to a hover at 3 feet above ground level (AGL), again without problems. He reported that he then turned around and entered forward flight in the opposite direction at 6 feet AGL and 20 MPH, again without problems. He stated that he then turned around again and entered forward flight at 30 MPH. He reported that as he decelerated from 30 MPH back toward a hover, the helicopter experienced a violent vibration of sufficient severity that he felt an immediate run-on landing was necessary. During the run-on landing, the helicopter nosed down, the forward blade struck the ground and the aft blade severed the helicopter's tail boom. The pilot reported that he then saw a flash in the helicopter's engine compartment in his peripheral vision, and thus decided to egress the helicopter immediately. After the pilot egressed, the helicopter's fuel tank caught fire and the helicopter burned. Post accident examination of the helicopter by personnel from the National Transportation Safety Board and Federal Aviation Administration disclosed no evidence as to the cause of the vibration or its origin.

NTSB Probable Cause Narrative

Aircraft control not maintained during a run-on landing. A vibration of unknown origin was a factor in the accident.

Event Information

Type of Event Accident
Event Date 6/27/2002
Event Day of the Week Thursday
Time of Event 1545
Event Time Zone Pacific Daylight Time
Event City Arlington
Event State WASHINGTON
Event Country --
Zipcode of the event site 98223
Event Date Year 2002
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 480939N
Event Location Longitude 1220932W
Event Location Airport ARLINGTON MUNI
Event Location Nearest Airport ID AWO
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 137
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1555 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID AWO
Elevation of weather observation facility 137
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 2400
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 19
Dew Point at event time (in degress fahrenheit) 15
Wind Direction (degrees magnetic) 300
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation Light
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 13225
NTSB Notification Source FAA ROC
NTSB Notification Date Jun 27 2002 12:00AM
NTSB Notification Time 1615
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 18 2003 4:34PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Seattle (Renton), WA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N13RM
NTSB Number SEA02LA115
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Seattle Aerotech
Aircraft Model Helipower 2500
Aircraft Series Identifier --
Aircraft Serial Number --
Certified Max Gross Weight --
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 --
Airframe Hours 7
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name General Helicopter, Inc.
Aircraft Owner Street Address 1309 Bonneville Ave Ste C
Aircraft Owner City Snohomish
Aircraft Owner State WA
Aircraft Owner Country USA
Aircraft Owner Zipcode 982902065
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 None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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) Flight Test
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code AWO
Departure City ARLINGTON
Departure State WA
Departure Country USA
Departure Time --
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code AWO
Destination City Arlington
Destination State WA
Destination Country USA
Specific Phase of Flight Maneuvering
Report sent to ICAO? No
Evacuation occurred Yes
Date of most recent change to record Feb 28 2003 4:17PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --