@keith williams
Hello keith. Can u solve this question. Again from radio aids oxford book- vor chapter.
Q4)what is the theoretical maximum range that an aircraft at FL 420 will obtain from a vor beacon situated at 400 feet above msl?
a) 225 nm
b) 256 nm
c) 281 nm
d) 257 nm
answer is a) 225 NM
My explanation:
Range = 1.25*(Root of ht + root of hr)
=1.25*(root of 400 + root of 42000)
= 281 NM