Narrative:

After run-up; I was taxiing to hold short line for IFR departure clearance. Brakes are less effective in our training aircraft. I asked student for sequencing way point after radar vectors? He paused and I pointed to his paper departure procedure (I required them to have paper as well as their digital fight bag-as they seem to depend on electronics versus anticipating battery failure and being prepared accordingly). When I bent down to point and instruct student how to navigate a departure procedure and follow ATC direction after radar vectors away from the departing airport; the aircraft creeped off the pavement slightly. As I felt the right main drop a bit; I immediately stopped. I tried beta to back up onto the ramp. When it wouldn't return to the ramp; I used differential power to turn left and return to the ramp. On this short distance; the right prop clipped the taxi light. I felt a very 'slight bump'; analogous to a small divot in the taxiway. I immediately checked all temperatures; pressures to sense any abnormality; especially any vibration and all was normal. I paused and determined to continue flight.we departed and flew the training lesson and returned this aircraft to its facility for a phase inspection and returned with another. At no time during this flight did any abnormality present itself. After loading the replacement aircraft; filing our return flight plan and beginning to taxi for departure; the student mentioned; 'sir; prop bent on [original aircraft]'. This was my first knowledge of any 'issue'. I replied as I taxied past [original aircraft] and saw the prop blade in question; that I would file to required reports on returning to our home base.I learned some valuable lessons.1. At any time; at any 'issue' stop and inspect aircraft. Anytime pavement is taxied off. Shutdown aircraft and call maintenance to handle retrieval.2. When training [international] students with language challenges; I must think and fly like I'm single pilot IFR and not expect them to be first officer CRM competent; even though they are comm. Multi/ instrument/ pilots with class B experience.

Related reports:

Google
 

Original NASA ASRS Text

Title: BE9L Flight Instructor reported while taxiing to the hold short line the RH main crept off the taxiway causing the RH propeller to clip the taxiway light.

Narrative: After run-up; I was taxiing to hold short line for IFR departure clearance. Brakes are less effective in our training aircraft. I asked student for sequencing way point after radar vectors? He paused and I pointed to his paper departure procedure (I required them to have paper as well as their Digital Fight Bag-as they seem to depend on electronics versus anticipating battery failure and being prepared accordingly). When I bent down to point and instruct student how to navigate a departure procedure and follow ATC direction after Radar vectors away from the departing airport; the aircraft creeped off the pavement slightly. As I felt the right main drop a bit; I immediately stopped. I tried BETA to back up onto the ramp. When it wouldn't return to the ramp; I used differential power to turn left and return to the ramp. On this short distance; the right prop clipped the taxi light. I felt a very 'slight bump'; analogous to a small divot in the taxiway. I immediately checked all temperatures; pressures to sense any abnormality; especially any vibration and all was NORMAL. I paused and determined to continue flight.We departed and flew the training lesson and returned this aircraft to its facility for a phase inspection and returned with another. At no time during this flight did any abnormality present itself. After loading the replacement aircraft; filing our return flight plan and beginning to taxi for departure; the student mentioned; 'sir; prop bent on [original aircraft]'. This was my first knowledge of any 'issue'. I replied as I taxied past [original aircraft] and saw the prop blade in question; that I would file to required reports on returning to our home base.I learned some valuable lessons.1. At any time; at any 'Issue' stop and inspect aircraft. anytime pavement is taxied off. Shutdown aircraft and call maintenance to handle retrieval.2. When training [international] students with language challenges; I must think and fly like I'm single pilot IFR and NOT expect them to be first officer CRM competent; even though they are Comm. Multi/ instrument/ pilots with Class B experience.

Data retrieved from NASA's ASRS site 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.