The Aeroport is an important location for the Retabution quest.
If you search the Aeroport you will find a fragment of pilots diary this will tell you where a broken Helicopter is Arkhangelsk
Fragment of pilots diaryEdit
... only dead bodies here. I found a bit of fuel for my helicopter . But I still haven't any spare parts. My Helicopter is able now to make one or two flights, not more. I'm going to Arkhangelsk to find some spare parts or somebody alive.