# Accident 20000122009049A: Mtsbsi MU2B26A, San Antonio, TX, January 22, 2000 - Type: FAA accident report (Accident/Incident Data System), as reported - Date: January 22, 2000, 14:37 local time - Place: San Antonio, TX - Airport: San Antonio International - Damage: Destroyed - Phase of flight: To Init Climb(1st Pwr Reduct) - Operating rules: General operating rules (Part 91) - Location: 29.5536° N, 98.4831° W: From the FAA - Nearby events: https://openairdocs.org/map.md?lat=29.5536&lon=-98.4831&mi=10 - Aircraft: N386TM, a cancelled registration (https://openairdocs.org/deregistered/N386TM-2018-01-18) (OpenAirDocs) - Registry model: Mitsubishi MU-2B-26A (registry code 5780414, https://openairdocs.org/model/mitsubishi-mu-2b-26a) (OpenAirDocs) - Registry engine: Alliedsign TPE331-12UHR (registry code 02505, https://openairdocs.org/engine/alliedsign-tpe331-12uhr) (OpenAirDocs) - Reported make and model: MTSBSI MU2B26A - Reported engine: GARRTT TPE33112UHR - People aboard: 2 - Fatal injuries: 2 - Pilot flight hours: 1,825 total - NTSB investigation: [NTSB FTW00FA070](https://openairdocs.org/ntsb/FTW00FA070) (OpenAirDocs) - FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/) - Page: https://openairdocs.org/incident/20000122009049A ## Narrative As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^. (-23) ACCORDING TO EYE WITNESS: RIGHT ENGIEN MANFUNCTIONED ON TAKE-OFF. THE PILOT TURNED AIRCRAFT TO THE RIGHT. THE AIRCRAFT APPEARED TO STALL AND IMPACTED THE GROUND. AIRCRAFT WAS DESTROYED BY FIRE AFTER IMPACT. DUE TO THE FACT THE BODIES WERE EJECTED FROM THE AIRCRAFT, THE INVESTIGATION DID NOT REVEAL WHO THE PIC OR SIC WERE. AN M OR D REPORT WILL BE SUBMITTED AFTER AN ENGINE TEARDOWN. NO NMAC. (.4) 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 HE CONTINUED TO WATCH THE AIRPLANE, AS THE GEAR WAS RETRACTED AND THE AIRPLANE ENTERED A CLIMB AND RIGHT TURN.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 ABO UT 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. ## The NTSB's investigation of this event (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB FTW00FA070](https://openairdocs.org/ntsb/FTW00FA070), Jan 22, 2000: Mitsubishi MU-2B-26A (N386TM), San Antonio, TX, destroyed, 2 fatal. Probable cause: 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… From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.