NAV20 From Australia, joined Nov 2003, 9909 posts, RR: 35
Reply 2, posted (10 years 5 months 2 weeks 6 days 19 hours ago) and read 3740 times:
Normally you can't operate any aeroplane unless it has a current Certificate of Airworthiness. Those are issued not by the manufacturers but by government inspectors (from the FAA in the USA).
I don't know what the procedure is for prototypes. Presumably. provided that the inspectors are as sure as they can be that the aeroplane is safe, they issue a limited certificate, allowing the aeroplane to fly in certain zones and in certain ways, limiting the number of people they can carry etc. Then the certificate is gradually up-graded on the basis of successful continued testing.
"Once you have flown, you will walk the earth with your eyes turned skywards.." - Leonardo da Vinci
MD11Engineer From Germany, joined Oct 2003, 14674 posts, RR: 62
Reply 3, posted (10 years 5 months 2 weeks 6 days 17 hours ago) and read 3661 times:
I assume that this plane will first fly under a permit to fly as an experimental, until all the necessarydata has been proven during the test flights (this is what the test flights are for). They will test stuff like low speed behaviour, possible flutter, stall speeds, engine out performance, climb performance, c of g sensitivity, etc. . Once the authories are happy that the plane is fullfilling all the legal requirements, it wil get a type certificate, on which the airworthiness release is based. As an experimental, it can not be used for revenue flights.