The key thing is accurate ID of target so you do not drop on own troops. Typical patter. Pilot has a map, different scale from FAC. FAC says - Do you see village Amesbury (position Lat/long or an internal military co-ord position)? Look NW 500 metes, 3 buildings by road with trees alongside. That is your target."
Note, pilots have to at all times know their compass rose, ie where North is. CAS pilots must have situational awareness of ground objects and compass direction on the ground. It takes time to teach.
In the Ross Kemp documentary last night, the F18 pilot had obviously got lost, even though he had GPS and rover! That was why he did a "show of strength" flyby and did not drop bombs!
The pilot has an Ingress Point, about 10 miles away. He comes in and make sures he can really eyball the target as described. He might circle for 5 minutes until he has absolute clarification of ID. Apaches work in pairs, using a racetrack pattern over the target area.