Only the country that emitted the certifications can cancel them. (models, not individual aircrafts). Examples of certifications DO-254 and DO-178, those are r

Only the country that emitted the certifications can cancel them. (models, not individual aircrafts). Examples of certifications DO-254 and DO-178, those are required for building avionics and general software. Link: http://en.wikipedia.org/wiki/DO-178B http://en.wikipedia.org/wiki/DO-178B Cool stuff. When I quit flying I thought about building software for aviation. Didn't work out.