San Antonio International Airport
Aircraft Accident/Incident Report

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

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 He continued to watch the airplane, as the gear was retracted and the airplane entered a climb and right turn.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 Event Accident
Event Date 1/22/2000
Event Day of the Week Saturday
Time of Event 1432
Event Time Zone Central Standard Time
Event City San Antonio
Event State TEXAS
Event Country --
Zipcode of the event site 78216
Event Date Year 2000
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 293313N
Event Location Longitude 0982859W
Event Location Airport San Antonio International
Event Location Nearest Airport ID SAT
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 360
Airport Elevation 809
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1438 Central Standard Time
Direction of event from weather observation facility (degrees) 360
Weather Observation Facility ID SAT
Elevation of weather observation facility 809
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
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 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) 29.83
Density Altitude (feet) 1795
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 11824
NTSB Notification Source --
NTSB Notification Date Jan 22 2000 12:00AM
NTSB Notification Time 1545
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 4 2002 9:52AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N386TM
NTSB Number FTW00FA070
Missing Aircraft Indicator N
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 None
Aircraft Manufacturer's Full Name Mitsubishi
Aircraft Model MU-2B-26A
Aircraft Series Identifier MU-2B-26A
Aircraft Serial Number 386SA
Certified Max Gross Weight 10250
Aircraft Category Airplane
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 9
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Aug 19 1999 12:00AM
Airframe hours since last inspection 46
Airframe Hours 3767.3
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name BTC Saratoga, Inc.
Aircraft Owner Street Address 14375 Saratoga Dr., Suite H
Aircraft Owner City Saratoga
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 95070
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) Personal
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code SAT
Departure City San Antonio
Departure State TX
Departure Country USA
Departure Time 1432
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code TUS
Destination City Tucson
Destination State AZ
Destination Country USA
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record May 14 2002 6:32PM
User who most recently changed record SNYG
Since inspection or accident Time of Accident
Event Location Runway Number and Location 30L
Runway Length 8502
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --