"Matt Whiting" wrote in message
...

I never was very good in grammar, but what is the parsing order in the
above. Is it "DME or (RADAR and ADF)" or "(DME or RADAR)
and ADF?" I'm assuming English has an order of evaluation as does
mathematics, I'm just not familiar with what it is.


I don't know anything about orders of evaluation for English. RADAR or DME
is required, you must also have ADF. That's clear from a brief examination
of the procedure.



I would have read this as requiring
either DME or requiring RADAR and ADF, but that isn't how you
interpreted it and I frankly don't know which is correct from a language
perspective.


I conclude the same as you. Remember, these notes are not regulatory,
they're just reminders.