Thanks for all the input PPRuNers, and ETOPS I REALLY like the colour point. Fl1ingfrog, Why? Well, firstly the ‘Golf’ part is completely superfluous and a waste of bandwidth (indeed, there could easily be another ‘Golf Charlie Delta’ on frequency) and secondly, if you’re looking for traffic that you’ve heard, and you see something where you think that thing should be, you will assume that what you’re looking at is what you think you’re looking at. That’s human nature. However, if you heard ‘Warrior Charlie Delta’ but the machine you’re looking at has a high wing or rotary wing, you can be fairly confident that you’ve not yet ascertained the location of Warrior Charlie Delta! I do accept type specific may not be the best way though. Maybe "yellow Piper" or "blue heli" is better? EXDAC - again, agreed. G-CD tells you very little. Jet-CD, a great deal more. Glider -CD tells you its not going to go around, Microlight -CD, no more than 60-ish on final, Autogyro-CD, steep approach, very short ground roll, slow to taxi clear.