According to 91.171, I am not allowed to fly IFR unless:
"...unless the VOR equipment of that aircraft -
(1) Is maintained, checked, and inspected under an approved procedure; or (2) Has been operationally checked within the preceding 30 days, and was found to be within the limits of the permissible indicated bearing error set forth in paragraph (b) or (c) of this section."
When it says "VOR equipment" am I to assume that requires ALL VOR receivers to be functional? Or is this assuming a single VOR receiver, therefore if one of mine is working, would I legally be allowed to fly?
Of course the 91.213 statement also says that "no person may take off an aircraft with inoperative instruments or equipment installed" and then goes on to list a variety of requirements to meet if it is to take off.
Thanks for the help!