Originally Posted by
ApolloHeli
Must say I've been in that situation (forgetting the aircraft's callsign and realising there isn't a nameplate in the cockpit) however I had luckily written down the registration on my kneeboard prior to the flight which saved me the embarrassment. Since then I always keep it in the same location on each kneeboard log so I can check the callsign in the same visual area regardless of which type I'm flying.