ilsub wrote:

Hello.
My home base airport (KOSU) has ILS 9R approach and NDB 27L approach.
My question is,
Can they have Localizer Back Course 27L?
I am wondering if the signal is always avaialble on the reverse
side of Localizer. Or should there be something extra to have
Localizer back course?

I tested the signal while landing on runway 27L, and it seemed that
the signal was available. But there is no published instrument
approach like Localizer back course 27L approach.

Can you give me input on this?
I think Localizer Back course would be more accurate than NDB
approach.

Thank you.
Ilsub Jung

Back courses are more often not available to flight inspection tolerances
for approaches because of shielding of the antennas to make the front
course perform to requirements.