On 9 August 1947 a pair of modified Piper PA-12 Super Cruisers departed Teterboro Airport, NY, heading east on the start of a four-month around-the-World tour. As they neared the end of the eleven-hour North Atlantic stage from Iceland they found Prestwick to be fogged-in and so diverted to make a Moonlit landing at .... Newtownards.
Both aircraft subsequently continued their flights and landed in a further 28 countries or regions before arriving back whence they had started on 10 December. Total flying time was 275 hours 25 minutes.
They were registered NX8671M and NX2365M, the 'X' indicated that they were registered in the Experimental category as they were 25% overweight on account of the 100-gallon fuel tanks replacing the rear bench seat. 8671M is still airworthy, as far as I can tell, having been restored by the Piper Museum in the late 1990s. 2365M hangs at the Udvar-Hazy Center in Washington and wears an Ulster flag upon its flank...
[ Edit: better profile photo ]
https://airandspace.si.edu/webimages/collections/full/A19500101000cp02.jpg