Aircraft Incident/Accident Report
San Antonio International Airport

San Antonio, Texas 78216
Saturday, January 22, 2000 14:32 CST

| More
NTSB Narrative Summary Released at Completion of Accident
Witnesses reported that during the airplane's takeoff roll they heard a heard a series of repeated sounds, which they described as similar to a "backfire" or "compressor stall." Several witnesses reported seeing the airplane's right propeller "stopped." One witness reported that as the airplane lifted off the ground, he heard "a loud cracking sound followed by an immediate prop wind down into feather." He continued to watch the airplane, as the gear was retracted and the airplane entered a climb and right turn. Subsequently, the airplane pitched up, entered a "Vmc roll-over," followed by a 360-degree turn, and then impacted the ground. Radar data indicated the airplane took off and climbed on runway heading to a maximum altitude of about 200 feet agl. The airplane than entered a right turn and began to lose altitude. A radar study revealed that the airplane's calibrated airspeed was 97 knots when the last radar return was recorded. According to the flight manual, minimum controllable airspeed (Vmc) was 93 knots. Examination of the accident site revealed that the airplane impacted the ground in a near vertical attitude. A post-crash fire erupted, which destroyed all cockpit instruments and switches. Examination of the propellers revealed that neither of the propellers were in the feathered position at the time of impact. Examination of the left engine revealed signatures consistent with operation at the time of impact. Examination of the right engine revealed that the second stage impeller shroud exhibited static witness marks indicating that the engine was not operating at the time of impact. However, rotational scoring was also observed through the entire circumference of the impeller shroud. The static witness marks were on top of the rotational marks. Examination of the right engine revealed no anomalies that would have precluded normal operation. The left seat pilot had accumulated a total flight time of about 950 hours of which 16.9 hours were in an MU-2 flight simulator and 4.5 hours were in the accident airplane. Although he had started an MU-2 Pilot-Initial training course, he did not complete the course. The right seat pilot had accumulated a total flight time of about 2,000 hours of which 20.0 hours were in an MU-2 flight simulator and 20.6 hours were in the accident airplane. He had successfully completed an MU-2 Pilot-Initial training course one month prior to the accident.
NTSB Probable Cause Narrative
the pilot's failure to maintain the minimum controllable airspeed following a loss of engine power during the initial takeoff climb. Contributing factors to the accident were both pilot's lack of total experience in the make and model of the accident airplane and the loss of right engine power for an undetermined reason.
Event Information
Type of EventAccident 
Event Date1/22/2000 
Event Day of the WeekSaturday 
Time of Event1432 
Event Time ZoneCentral Standard Time 
Event CitySan Antonio 
Event StateTEXAS 
Event Country-- 
Zipcode of the event site78216 
Event Date Year2000 
Event Date Month
MidAir Collision IndicatorNo 
On Ground Collision occurred ?No 
Event Location Latitude293313N 
Event Location Longitude0982859W 
Event Location AirportSan Antonio International 
Event Location Nearest Airport IDSAT 
Indicates whether the acc/inc occurred off or on an airportOff Airport/Airstrip 
Distance from airport in statute miles
Degrees magnetic from airport360 
Airport Elevation809 
Weather Briefing CompletenessFull 
Investigator's weather sourceWeather Observation Facility 
Time of the weather observation1438 Central Standard Time 
Direction of event from weather observation facility (degrees)360 
Weather Observation Facility IDSAT 
Elevation of weather observation facility809 
Distance of event from weather observation facility (units?)
Time Zone of the weather observationCST 
Lighting ConditionsDay 
Lowest Ceiling Height25000 
Lowest Non-Ceiling Height-- 
Sky/Lowest/Cloud ConditionsClear 
Sky Condition for Lowest CeilingOvercast 
Visibility Runway Visual Range (Feet)
Visibility Runway Visual Value (Statute Miles)
Visibility (Statute Miles) 10 
Air Temperature at event time (in degrees celsius)21 
Dew Point at event time (in degress fahrenheit)14 
Wind Direction (degrees magnetic)220 
Variable Wind IndicatorWind direction could be determined 
Wind Speed (knots)
Wind Velocity Indicator -- 
Wind Gust IndicatorNot Gusting 
Wind Gust (knots) -- 
Altimeter Setting at event time (in. Hg) 29.83 
Density Altitude (feet)1795 
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)11824 
NTSB Notification Source-- 
NTSB Notification DateJan 22 2000 12:00AM 
NTSB Notification Time1545 
Fiche Number and/or location -used to find docket informationDMS 
Date of most recent change to recordJun 4 2002 9:52AM 
User who most recently changed recordNTSB\MONR  
Basic weather conditionsVisual Meteorological Cond 
FAA District Office-- 
Aircraft Involved
Aircraft #1
Aircraft Registration NumberN386TM 
NTSB NumberFTW00FA070 
Missing Aircraft Indicator
Federal Aviation Reg. PartPart 91: General Aviation 
Type of Flight Plan filedIFR 
Flight plan Was Activated?No 
DamageDestroyed 
Aircraft FireGround 
Aircraft ExplosionNone 
Aircraft Manufacturer's Full NameMitsubishi 
Aircraft ModelMU-2B-26A 
Aircraft Series IdentifierMU-2B-26A 
Aircraft Serial Number386SA 
Certified Max Gross Weight10250 
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 gearRetractable 
Aircraft, Type of Last Inspection100 Hour 
Date of Last InspectionAug 19 1999 12:00AM 
Airframe hours since last inspection46 
Airframe Hours3767.3 
ELT InstalledYes 
ELT ActivatedYes 
ELT Aided Location of Event SiteNo 
ELT Type-- 
Aircraft Owner NameBTC Saratoga, Inc. 
Aircraft Owner Street Address14375 Saratoga Dr., Suite H 
Aircraft Owner CitySaratoga 
Aircraft Owner StateCA 
Aircraft Owner CountryUSA  
Aircraft Owner Zipcode95070 
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 certificateNone 
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)Personal 
Second Pilot on BoardYes 
Departure Point Same as EventYes 
Departure Airport CodeSAT  
Departure CitySan Antonio 
Departure StateTX 
Departure CountryUSA 
Departure Time1432 
Departure Time ZoneCST 
Destination Same as Local Flt-- 
Destination Airport CodeTUS  
Destination CityTucson 
Destination StateAZ 
Destination CountryUSA 
Specific Phase of FlightTakeoff 
Report sent to ICAO?-- 
Evacuation occurred-- 
Date of most recent change to recordMay 14 2002 6:32PM 
User who most recently changed recordSNYG  
Since inspection or accidentTime of Accident 
Event Location Runway Number and Location30L 
Runway Length8502 
Runway Width150 
Sight Seeing flightNo 
Air Medical FlightNo 
Medical Flight--