Hi there
SA227 and Albatross have got it pretty well right
it all depends on a number of factors - day/night, weather ie cloud base, traffic levels and make up, and although it shouldn't, it can also depend on who is sitting in which chair at the time.
generally if it's daytime and the cloudbase is above 3000' we advertise 'conditions suitable for visual approaches' on the atis. Terminal will either vector towards Kauri or tomas or even direct to the AA VOR anticipating a visual. If the traffic levels pick up then it's easier and more orderly to take everything for the ILS. Same if the weather packs in or if the base lowers then it's ILS. At night you are not supposed to advertise Visuals but we generally bring stuff direct anticipating they will call the visual - if there is any doubt then you will usually get headed toward the ILS, and Internationals are set up for the ILS anyway by both day and night. The 2000' restriction on the descent is to give a buffer against traffic operating in the zone.
The reason for the 3nm final and the establishment of the points Tomas and Kauri is to get traffic established on final by 3nm for the approach monitoring aid to get a reasonable pickup on the target. This alerts if you are not aligned for the correct runway. Designed to reduce the embarrasment ( and huge paperwork load ) of landing on the wrong runway.
If you want to get a general feel for the operation into AA then basically track to Waiuku WI and Tomas for a visual to 23L or via Emrag for the ILS 23L. Try maintaining 2000ft to about clendon park to simulate a bit of a hold up and then descend around onto final from there.
For 05r then via Pokom (AA 160R50D) direct to Lengu for an ILS 05R or cut the corner toward Kauri for the visual.
If you are doing a night freight run then just head direct to the AA vor and then go balls to the wall and get in in front of anything on approach if possible. Thats about it really.
Welcome to AA - now get off the damn runway - I've got 3 on final behind you and 6 at the holding point!
