General William J Fox Airport
Aircraft Accident/Incident Report

Lancaster, California 93536
Thursday, January 30, 2003 19:37 PST

NTSB Narrative Summary Released at Completion of Accident

The airplane collided with a hangar during a go-around. The flight crew entered the traffic pattern and completed one touch-and-go landing. The crew requested, and the controller cleared them, for a simulated single engine full stop landing on runway 24. The controller thought that the touch-and-go approach and landing was unremarkable and perfectly normal. On the single engine full stop approach, he thought that the airplane made a short approach with the wings rocking back and fourth. The airplane looked like it was low and could possibly land short of the runway. As the airplane approached the end of the runway, it began to veer to the left (from the flight crew's perspective). The controller said it appeared to be headed directly for the control tower as it continued to drift left. The airplane stayed low to the ground and the controller had the impression that the flight crew was attempting to climb. The wing lights were continuously rocking back and fourth as the airplane continued to drift left and it crossed the dirt infield and a taxiway while still airborne. The bank angle then increased sharply to the left, and the airplane disappeared behind some hangars. The controller estimated that the airplane was 1,500 feet from the approach end of the runway when he observed a fireball and alerted rescue crews. The instructor pilot's autopsy noted undiagnosed lung cancer that had metastasized to his brain. The brain showed evidence of severe swelling, with disruption of the normal brain structure. The instructor pilot had been prescribed a pain medication (tramadol), which was found in the instructor pilot's blood at a level consistent with regular use at least at the dose prescribed. The medication is known to increase the risk for seizures, particularly in patients with other potential seizure risks. The effects of the brain swelling and the medication likely produced seizure activity in the instructor which could have significantly interfered with the aircraft controls and made it difficult or impossible for the student to have adequately controlled the aircraft.

NTSB Probable Cause Narrative

a loss of aircraft control due to the instructor pilot's incapacitation by seizure activity as a result of his undiagnosed cancer, and his use of a medication that can increase seizure risk.

Event Information

Type of Event Accident
Event Date 1/30/2003
Event Day of the Week Thursday
Time of Event 1937
Event Time Zone Pacific Standard Time
Event City LANCASTER
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93536
Event Date Year 2003
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 334447N
Event Location Longitude 1181312W
Event Location Airport General William J Fox
Event Location Nearest Airport ID WJF
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 --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1938 Pacific Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID WJF
Elevation of weather observation facility 2348
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PST
Lighting Conditions Night
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) 12
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 300
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.23
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 20280
NTSB Notification Source FAA
NTSB Notification Date Jan 30 2003 12:00AM
NTSB Notification Time 2010
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 31 2006 10:47AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-VNY-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5639S
NTSB Number LAX03FA078
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 Ground
Aircraft Manufacturer's Full Name Beech
Aircraft Model D95A
Aircraft Series Identifier --
Aircraft Serial Number TD-658
Certified Max Gross Weight 4200
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 4
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 1 2002 12:00AM
Airframe hours since last inspection --
Airframe Hours 4270
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Barnes Aviation
Aircraft Owner Street Address 4555 W. Ave G
Aircraft Owner City Lancaster
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 96539
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) Instructional
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code WJF
Departure City LANCASTER
Departure State CA
Departure Country USA
Departure Time 1830
Departure Time Zone PST
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 Approach - VFR pattern - final approach
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jun 26 2006 4:11PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location 24
Runway Length 150
Runway Width 7201
Sight Seeing flight No
Air Medical Flight No
Medical Flight --