AIM
6/17/21
2.
With the progression of navigation capabili-
shown in FIG 1
−
1
−
4. The other two new SSVs are
ties to Performance Based Navigation (PBN),
associated with DME: DME Low (DL) and DME
additional capabilities for off
−
route navigation are
High (DH), as shown in FIG 1
−
1
−
5. The SSV at
necessary. For example, the VOR MON (See
altitudes below 1,000 feet for the VL and VH are the
paragraph 1
−
1
−
3 f.) requires the use of VORs at 5,000
same as FIG 1
−
1
−
3. The SSVs at altitudes below
feet AGL, which is beyond the original SSV ranges.
12,900 feet for the DL and DH SSVs correspond to a
Additionally, PBN procedures using DME require
conservative estimate of the DME radio line of sight
extended ranges. As a result, the FAA created four
(RLOS) coverage at each altitude (not including
additional SSVs. Two of the new SSVs are associated
possible terrain blockage).
with VORs: VOR Low (VL) and VOR High (VH), as
FIG 1
−
1
−
4
New VOR Service Volumes
1
−
1
−
8
Navigation Aids