That's if you are an-FAA like entity. But what about a ragtag group of scientists putting objects in the sky, with no access to airport operations or govt sanction ?
No? You can call in as a pilot and issue a NOTAM if you want to. You can phone up the relevant air traffic control center and issue a NOTAM as well. You might do this if you saw something unusual like a plane in controlled air space that was flying in a dangerous manner. Or if you were doing something in uncontrolled airspace that could still be a hazard, so you report it so other's can adjust for it.
As long you're making true reports you're more than welcome to. You should look up the airspace restrictions in the area you will be launching in to ensure you are using unrestricted airspace.
