If Latin America is a possibility, how about Peru? Their flag colours are red and white.
Originally Posted by ETOPS
Well I've found a possible match..
There's a UH-1H stored at Ozark-Blackwell Field with the serial 73-21805. If that had spent time on loan to another countries Airforce, it might have been painted as we see in the photo.
The Joe Baugher website lists 73-21805 as (c/n 13493), it also lists a sister ship in the batch as 73-21765 as (c/n 13453) with a note saying that it was
"apparently destined for Peruvian Police." Plus two others that I saw.
Also, the Wiki page on the Peruvian National Police, says they had 23 UH-1s at some stage.
It's a bit thin perhaps, but maybe someone has a list of tail numbers for Peru from the 1970s / early 1980s.