You are coooorrrect!
The aircraft was delivered in August 1925. It carried Heinkel’s c/n 235 and got the military registration 66, which also later became its Air Force number. The evaluations at Malmen were finished in March 1927. At this time the Air Force was nearly one year old. The HD 35 now carried the designation Sk 5 and the earlier Army Aviation establishment at Malmen had formed the Air Force Wing F 3.
The HD 35 showed itself too heavy and was, together with its not too strong engine, not a suitable trainer aircraft. The single Sk 5 was transferred to the War Flying School F 5 at Ljungbyhed, where the photo above was taken in 1926. There it became the personal aircraft of the head of the school, the legendary Navy aviator Captain Arvid Flory.
The Sk 5 was written off in the summer of 1929. It was sold to the civil market and got the registration SE-SAM. It was flown by several pilots until 1940, when it was grounded for good.
The aircraft still exists and is owned by Flygvapenmuseum. It is under restoration by a volountary group at Tullinge former Air Force base (F 18) near Stockholm.
You have control.