I might just add that your 'Ready for departure' call is meaningless to an A/G operator.
Refer CAP 413, section 5.4.3 for use of 'Ready for departure' at an A/G field.
It's not meaningless at all even if it is not manned, if I'm on final at an A/G field and someone else calls 'ready for departure' that indicates clearly to me they have finished their take-off/power checks and intend to line up
if the approach is clear. I'll be watching them and hopefully they will have seen me. It's a bit late when they say 'lining up', but if in doubt after a 'ready for departure' one can repeat 'G-XX Final' to remind them you are there. (Surely these things happen to others don't they?)
It's interesting discussing the topic, certainly seems that either, one can be use to operations at a particular field and assume the RT is the 'norm' without that being the case.
Or perhaps reading a lot of the replies it is the case at a lot of A/G fields and it is only those that rarely visit them that don't get 'contact 1 ahead' and then say 'rolling' when they take-off as they haven't really understood the environment much and perhaps feel they should warn everyone. (Just a little humor)
