In article , Dudley Henriques wrote:

[...] Air show time restraints really conflicted with the
13 days required to do a slow roll, although we all thought we
could live with the high speed pass, IF the announcer was required
to make the following announcement."Ladies and gentlemen, the
Goodyear blimp is now beginning a high speed pass over the field.
Those of you at lunch at the cafateria have two hours to return to
the flight line before the pass has been completed...Thank you!"

I was in the pattern at Livermore one day doing some touch and goes
when the Goodyear Blimp called in over the Altamont Pass (~10mi
out) for the ILS 25R. Tower asked for their ETA, which was 30
minutes. They were hoping to make Salinas before sunset and it
was around noon on a summer day.

Another time I was flying the SF bay tour and the Metlife Blimp
and Airship Ventures Zeppelin were both over the bay. As all three
of us made loops around the bay, approach kept calling them out to
me as traffic, but since neither airship was talking to approach,
ATC kept thinking they were helicopters. ATC: "Traffic alert, 12
o'clock and 2 miles, same altitude, moving pretty slow, probably
a helicopter." Me: "Roger, we have the blimp in sight."

John
--
John Clear - http://www.clear-prop.org/