Quote:
Originally Posted by The Real BigGuy
Correction: it is not the speed of the aircraft, it is the date numbers were first applied or manufactured. From National Aviation Center - “These must be at least 12 inches high, with a few exceptions. An airplane that displays marks at least 2 inches high before November 1, 1981 and an aircraft manufactured after November 2, 1981, but before January 1, 1983, may display those marks until the aircraft is repainted or the marks are repainted, restored, or changed.” If this is the seaplane that wanted to sell rides from Pier 19 I believe it’s owner stated it was a pre 80’s model in one of his posts.
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I believe the speed reference quoted above applies to Experimental aircraft. "Experimental" is a very broad term in the aviation world, including everything form ultralights to kits like the BD-5 which I think is actually a jet.
Trying not to get too far off subject, but the OP didn't give much description or a picture, so there is speculation running through the thread.