Well I was thinking....
that if Viking has the legal authority to amend, revise, or, delete the AFM and Maintenance Manuals for the DHC6-300 Twin Otter built by deHavilland, then it would seem plausible to me that Viking can publish those amendments, revisions, and, deletions.
If they have, then I'm sure we have them on file. If we have them on file then they are being adhered too. Making all this redundant. As I said before, I'm no longer directly involved with Operations and Maintenance. However I am curious as to why anyone would find it necessary or convenient to apply so much force against flat paddles spinning near their heads.
We alter our airframes extensively and have several configured alterations for the Twin Otter so I’ll see if I can bother our engineering department with the question. Thanks again V1.