I will Never do that again
Ferrying a civilian 500 from a private site in uncontrolled airspace but near to to an Airfield within a CTR a call was required for inbound clearance.
Looking around the panel for the heli's call sign it was not to be seen. 10 miles out at 1000' and books on rear seats what should I do ?
Land and look on outside or proceed with a made up ident and apologise to the controller on landing ? Took second option.
Ex mil and always with an issued personal call sign lead to this error.
What might you be willing to disclose that others might learn from 'that's not in the book' There must be many.