Not that many ships I flew required me to think about this in the past, but it comes to my mind since I'm just going to fly Eta-2.
Here is the scene:
If an enemy ship bumps into you and makes itself at range 0 to you, is it in your firing arc?
I'm now resolving this with "no".
Since it is said in FAQ that you yourself is not in your firing arc, I believe the range requirement for judging a ship is in the firing arc or not is from range 1 to range 3, but - there is not a sentence saying that in the Rules Reference.
Anyone could help?