Recently, Larry Dighera posted:

On Tue, 1 May 2007 13:13:18 -0500, "Neil Gould" asked regarding LT @
LNN:

Where is that established?

Unless you see 'RT' in the information block on the sectional chart,
the traffic is left.

That was my presumption, as well, until my last flight review. It puzzled
me as to why aircraft can execute right traffic at this airport (not all
that infrequently, either). The CFI claimed that LNN was an exception, and
that there was no established pattern. My BFR happens to be due this
month, so maybe I'll ask another CFI. ;-)

Neil