On Monday, July 31, 2017 at 7:32:02 PM UTC-5, Tom BravoMike wrote:

The FAA Registry lists the glider under N91840, i.e. without the 'x'.

Tom BravoMike, please have a look at 14CFR 45.22 (b).

And as I read this, Guy, you didn't need to have the word "Experimental" on the side of the fuselage, because of the "X" in the registration number. If, however, the plane originally had "Experimental" on the side of the fuselage, then it "should" be there now, too!

Steve Leonard