"Gary Drescher" wrote in message
...

FAR 91.126b "Direction of turns: When approaching to land at an airport
without an operating control tower in Class G airspace-(1) Each pilot of
an airplane must make all turns of that airplane to the left unless the
airport displays approved light signals or visual markings indicating that
turns should be made to the right, in which case the pilot must make all
turns to the right."

The same requirement is imposed (except when ATC says otherwise) for Class
E, D, C, and B by 91.127, 91.129, 91.130, and 91.131.


The exception is just "unless otherwise authorized or required".