On enlargement, the accompanying text and the photo seem to say FH1000.I will go on a limb here and type typo.
If I may, a slightly larger scan of the photo above would bring the number on the side of the fuselage into view to confirm this hypothesis.
The following chatty text may be of interest... https://ingeniumcanada.org/channel/articles/a-brief-episode-in-the-life-of-pi-part-2
And here is part 1 of the article... https://ingeniumcanada.org/channel/articles/a-brief-episode-in-the-life-of-pi-part-1
It does, but the French text says "civvie version of OH-5A", which is the FH-1100On enlargement, the accompanying text and the photo seem to say FH1000.