Seen at Manado,Sam Ratulangi airport was a Indonesian Navy BO-105 (grey colourscheme) on May 19. Due to heat waves it wasn't possible to read off. According to Scramble Airforce Overview, there is no base here. However, on the other side of the airfield, across the main terminal building, a small hangar stating Navy is present. There appeared to be another aircraft to the left of the hangar, but due to high grass/bushes the type couldn't be identified.
Seen landing here on May 9, was a rather dark (green or black) Dornier aircraft, also appearing to be navy.
Daniel