kevmor wrote:

I was looking at the L1/L2 chart between RBL (Red Bluff) and SAC
(Sacramento). The change over point is at GRIDD because the airway
changes direction slightly. The only thing is, it shows the DME
distance to GRIDD from SAC as being 55nm. If I'm below 14,500, don't
all VORs have a service volume of 40nm out from the VOR?


Service Volumes don't apply to airways. FAA Frequency Management and
Flight Inspection supercede Service Volumes when airways are built.