Aircraft Incident/Accident Report


Anchorage, Alaska 99902
Monday, May 24, 1999 6:45 ADT

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NTSB Narrative Summary Released at Completion of Accident
A commercial pilot departed a private lake in a float equipped airplane for a flight over a 12 mile wide area of water. He intended to pick up two friends staying at a cabin, whom he dropped off the day before. The airplane did not arrive at the lake, and was reported overdue. Six days later, the body of the pilot was found along the shore of the area of water the pilot intended to cross. He was wearing a flotation cushion that was carried in the airplane. The cause of death was hypothermia, and drowning. The airplane has not been found. For several months before the accident, the airplane had a recurring engine roughness, backfiring, and several engine fires during start-up. During an annual inspection, one month before the accident, a mechanic installed a six point engine primer system. During flights within two days of the accident, passengers who flew in the airplane, commented that the engine would backfire when the throttle was reduced. One day before the accident, prior to flying the two friends to the cabin, the pilot purchased 20 gallons of automotive fuel, and poured it into the right wing fuel tank. During taxi for departure, the engine quit, and the pilot had difficulty restarting the engine. Automotive fuel is not recommended, or approved, for the engine.
NTSB Probable Cause Narrative
Undetermined.
Event Information
Type of EventAccident 
Event Date5/24/1999 
Event Day of the WeekMonday 
Time of Event645 
Event Time ZoneAtlantic Daylight Time 
Event CityANCHORAGE  
Event StateALASKA 
Event Country-- 
Zipcode of the event site99902  
Event Date Year1999 
Event Date Month
MidAir Collision IndicatorNo 
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 airportOff Airport/Airstrip 
Distance from airport in statute miles-- 
Degrees magnetic from airport-- 
Airport Elevation-- 
Weather Briefing CompletenessUnknown 
Investigator's weather sourceWeather Observation Facility 
Time of the weather observation653 Atlantic Daylight Time 
Direction of event from weather observation facility (degrees)45 
Weather Observation Facility IDPAN  
Elevation of weather observation facility144 
Distance of event from weather observation facility (units?)
Time Zone of the weather observationADT 
Lighting ConditionsDay 
Lowest Ceiling Height8000 
Lowest Non-Ceiling Height3500 
Sky/Lowest/Cloud ConditionsScattered 
Sky Condition for Lowest CeilingBroken 
Visibility Runway Visual Range (Feet)
Visibility Runway Visual Value (Statute Miles)
Visibility (Statute Miles) 10 
Air Temperature at event time (in degrees celsius)
Dew Point at event time (in degress fahrenheit)
Wind Direction (degrees magnetic)136 
Variable Wind IndicatorWind direction could be determined 
Wind Speed (knots)11 
Wind Velocity Indicator -- 
Wind Gust IndicatorNot Gusting 
Wind Gust (knots) -- 
Altimeter Setting at event time (in. Hg) 29 
Density Altitude (feet)-- 
Intensity of Precipitation-- 
METAR weather report -- 
Event Highest InjuryFatal 
On Ground, Fatal Injuries
On Ground, Minor Injuries
On Ground, Serious Injuries
Injury Total Fatal
Injury Total Minor-- 
Injury Total None-- 
Injury Total Serious-- 
Injury Total All
Investigating AgencyNTSB 
NTSB Docket Number (internal use)675 
NTSB Notification Source-- 
NTSB Notification DateMay 30 1999 12:00AM 
NTSB Notification Time1730 
Fiche Number and/or location -used to find docket informationIMAGE 
Date of most recent change to recordMay 28 2002 3:16PM 
User who most recently changed recordNTSB\JOHB  
Basic weather conditionsVisual Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN793C 
NTSB NumberANC99LA065  
Missing Aircraft Indicator
Federal Aviation Reg. PartPart 91: General Aviation 
Type of Flight Plan filedNone 
Flight plan Was Activated?-- 
DamageDestroyed 
Aircraft Fire-- 
Aircraft Explosion-- 
Aircraft Manufacturer's Full NameStinson  
Aircraft Model108  
Aircraft Series Identifier108  
Aircraft Serial Number3793  
Certified Max Gross Weight2500 
Aircraft CategoryAirplane 
Aircraft Registration ClassU.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
Number of Engines
Fixed gear or retractable gearFixed 
Aircraft, Type of Last InspectionAnnual 
Date of Last InspectionMay 5 1999 12:00AM 
Airframe hours since last inspection-- 
Airframe Hours1480 
ELT InstalledYes 
ELT ActivatedNo 
ELT Aided Location of Event SiteUnknown 
ELT Type-- 
Aircraft Owner NameALASKA SPINE INSTITUTE  
Aircraft Owner Street AddressP.O. BOX 230867  
Aircraft Owner CityANCHORAGE  
Aircraft Owner StateAK 
Aircraft Owner Country  
Aircraft Owner Zipcode99523  
Operator is an individual?-- 
Operator NameGLENN A. FERRIS  
Operator Same as Owner?No 
Operator Is Doing Business As-- 
Operator Address Same as Owner?No 
Operator Street Address2909 W. 100TH AVE.  
Operator CityANCHORAGE  
Operator StateAK 
Operator Country  
Operator Zip code99515  
Operator Code  
Owner has at least one certificateNone 
Other Operator of large aircraft?No 
Certified for Part 133 or 137 OperationUnknown 
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 BoardNo 
Departure Point Same as EventYes 
Departure Airport Code  
Departure City  
Departure StateAK 
Departure Country  
Departure Time630 
Departure Time ZoneADT 
Destination Same as Local Fltdest & departure same, accident can occur anywhere 
Destination Airport Code  
Destination City  
Destination State  
Destination Country  
Specific Phase of FlightUnknown 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordMay 28 2002 3:16PM 
User who most recently changed recordJOHB  
Since inspection or accident-- 
Event Location Runway Number and Location0  
Runway Length-- 
Runway Width-- 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--