You will need to progress through the story in order to acquire these two items:
Shock Gloves,
Glue Grenade.
You need these in order to access some of the comms towers that the riddler has set up to delay your batwing's signal. Amusement Mile uses the Glue Grenade and you need the Shock Glove for the Diamond District.
Once you have unlocked all of the comm towers fast travel to the BatCave. Once you are at the BatCave fast travel to Park Row then to The Bowery then to Amusement Mile and then to the Industrial District.
For the second Island Fast travel to Coventry after that fast travel to the Diamond District and finally to Burnley.
Hope this helps.
Thanks to keadybarry for confirming that you do not need to land in order for it to register you just have to use the fast travel station.
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