Narrative:

While practicing short field takeoffs with my student, aircraft #2 took off immediately behind me, and being faster, passed beneath me before we crossed the end of the runway. Aircraft #2 used no radio calls and seemed to be in a hurry. I found out later that the pilot of aircraft #2 was ferrying the aircraft to another airport for radio work and was not the owner of the aircraft.

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Original NASA ASRS Text

Title: INSTRUCTOR PLT RPT IN A C172. NMAC AS ACFT #2 TAKES OFF BEHIND HIS ACFT AND FLIES UNDERNEATH HIM AT THE RWY'S END. THE SECOND ACFT HAD NO RADIO, FERRYING TO GET IT REPAIRED.

Narrative: WHILE PRACTICING SHORT FIELD TKOFS WITH MY STUDENT, ACFT #2 TOOK OFF IMMEDIATELY BEHIND ME, AND BEING FASTER, PASSED BENEATH ME BEFORE WE CROSSED THE END OF THE RWY. ACFT #2 USED NO RADIO CALLS AND SEEMED TO BE IN A HURRY. I FOUND OUT LATER THAT THE PLT OF ACFT #2 WAS FERRYING THE ACFT TO ANOTHER ARPT FOR RADIO WORK AND WAS NOT THE OWNER OF THE ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.