I don't understand the point of having AFIS.
Why not have ATC? Failing that just use CTAF?
Because it costs a lot more money!
An aircraft was in the air on base, nearing final. I reported my ground position
Why? The next call should have been " Callsign HP... Ready for Departure!
... and was told to "report lining up"
The FISO is allowed to control all traffic, aircraft and vehicles, up to the holding point. By saying "Report lining up" he is passing the responsibility to the pilot to deceide when to line up as you are at the limit of control of the FISO. Technically, he should have said "(Aircraft callsign) traffic is (traffic information) take off at your
discretion, surface wind (number) degrees (number) knots" CAP413 2.3.2 Table 1. He might then request that you report lining up.