Portland-Hillsboro Airport
Aircraft Accident/Incident Report

Hillsboro, Oregon 97124
Sunday, July 16, 2006 16:28 PDT

NTSB Narrative Summary Released at Completion of Accident

The accident occurred during an air show event. The airplane was a static display at the air show and, with the exception of the accident flight, the airplane did not fly during the show. Event coordinators reported that the pilot planned to make three non-aerobatic low passes over runway 30, and subsequent to completion of the maneuvers, he intended to continue the flight to his home airport in Southern California. Several eyewitnesses, both in attendance at the show, and others located in the residential community where the airplane crashed reported that following the takeoff, the airplane entered a right downwind for runway 30. One witness, who was located near midfield, reported that the pilot's takeoff was "conservative" and the engine sounded "normal." A second witness, also located near midfield, reported that the takeoff was "consistent" with what you would expect from a vintage jet. Another witness reported that the airplane appeared to "wallow" nose high before it descended beyond his vantage point behind a tree line. The witnesses observed heavy black smoke in the area shortly after the airplane descended below the tree line. Numerous witnesses reported similar observations. FAA inspectors reported that the airplane impacted terrain in a residential neighborhood near the departure airport. One home was destroyed and two others were damaged by the post crash fire. Impact forces and post impact fire destroyed a majority of the airframe and associated components. The airframe, to include cockpit controls, instrumentation and flight controls, were destroyed by impact forces and post crash fire. Extensive thermal and impact related deformation was noted to the entire engine assembly and associated accessories. The forward air intake casing and forward section of the compressor casing were completely destroyed. The turbine assembly, to include the rotor blades and stators, were intact and with the exception of the surrounding case, sustained minimal damage. Silver/gray colored splatter type deposits were noted along the leading edges, pressure surface and shrouds of the turbine airfoils. Examination of the material, utilizing a scanning electron microscope (SEM), indicated the silver/gray material was mostly composed of aluminum alloy. No evidence of pre impact case deformation was noted during the engine exam. No open maintenance discrepancies were noted during a post accident review of the airplane's maintenance records.

NTSB Probable Cause Narrative

Loss of aircraft control for undetermined reasons during the takeoff sequence.

Event Information

Type of Event Accident
Event Date 7/16/2006
Event Day of the Week Sunday
Time of Event 1628
Event Time Zone Pacific Daylight Time
Event City Hillsboro
Event State OREGON
Event Country --
Zipcode of the event site 97124
Event Date Year 2006
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 453225N
Event Location Longitude 1225659W
Event Location Airport PORTLAND-HILLSBORO
Event Location Nearest Airport ID HIO
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0.5
Degrees magnetic from airport --
Airport Elevation 204
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1626 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID KHIO
Elevation of weather observation facility 208
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 30
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) --
Variable Wind Indicator Variable
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.11
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 22486
NTSB Notification Source FAA-
NTSB Notification Date Jul 16 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 29 2007 8:02AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office Portland, Oregon

Aircraft Involved

Aircraft #1

Aircraft Registration Number N58MX
NTSB Number SEA06FA142
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name Hawker Siddeley
Aircraft Model MK-58A Hunter
Aircraft Series Identifier --
Aircraft Serial Number XE-49
Certified Max Gross Weight 25000
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
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 Retractable
Aircraft, Type of Last Inspection AAIP
Date of Last Inspection Mar 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 2909
ELT Installed No
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Robert E. Guilford
Aircraft Owner Street Address --
Aircraft Owner City Los Angeles
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 90025
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) Air Race/Show
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code HIO
Departure City Hillsboro
Departure State OR
Departure Country USA
Departure Time 1627
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code VNY
Destination City VAN NUYS
Destination State CA
Destination Country USA
Specific Phase of Flight Emergency landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 11 2007 3:54PM
User who most recently changed record STAM
Since inspection or accident Last Inspection
Event Location Runway Number and Location 30
Runway Length 6600
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --