FMC Level Abeam Questions?
Thread Starter
Join Date: Mar 2003
Location: Here
Posts: 1,015
Likes: 0
Received 0 Likes
on
0 Posts
FMC Level Abeam Questions?
Good evening,
When ATC ask for example "Climb FL310 be level 60NM Abeam ***/*****" or "Descend FL60 be level 5NM abeam ***/*****". How is this programmed in the FMC to achieve the climb/descent profile required?
Cheers
BAe 146
When ATC ask for example "Climb FL310 be level 60NM Abeam ***/*****" or "Descend FL60 be level 5NM abeam ***/*****". How is this programmed in the FMC to achieve the climb/descent profile required?
Cheers
BAe 146
Couldonlyaffordafiver
Join Date: Dec 2000
Location: The Twilight Zone near 30W
Posts: 1,934
Likes: 0
Received 0 Likes
on
0 Posts
You would normally receive a clearance to be level 30nm before XXX, for example, or to be level abeam YYY.
In the former case (on my aeroplane at least), you enter a waypoint in the "Legs" page as XXX/-30. That will give you a new waypoint, 30 miles prior to point XXX on your current inbound track. You can then apply an altitude constraint to that point.
In the latter case, YYY can be either on your route or not. Either way, you can enter point YYY into the "Fix" page. From there, select the "abeam" option. This will work out the point on your track which is abeam YYY. This can now be inserted into your route on the "Legs" page as a "place/bearing/distance" from YYY. You can then apply an altitude constraint as above.
Hope that's clear.
In the former case (on my aeroplane at least), you enter a waypoint in the "Legs" page as XXX/-30. That will give you a new waypoint, 30 miles prior to point XXX on your current inbound track. You can then apply an altitude constraint to that point.
In the latter case, YYY can be either on your route or not. Either way, you can enter point YYY into the "Fix" page. From there, select the "abeam" option. This will work out the point on your track which is abeam YYY. This can now be inserted into your route on the "Legs" page as a "place/bearing/distance" from YYY. You can then apply an altitude constraint as above.
Hope that's clear.
