Build9A
Well Known Member
I have now lost a second tooth on the piano hinge at the bottom right side of the lower cowling at the firewall. I have searched the threads and noticed that this is a common problem after various numbers of flying hours. I have about 225 hrs. on my 9A.
Various solutions include camlock fasteners or screws or replacing with a new piano hinge. I am thinking about using screws into nutplates on aluminum lip riveted to the bottom firewall flanges. If this is a good solution, how many screws on each side of the bottom cowling are recommended?
All other piano hinges on the top and sides are still looking good, so I am just thinking of using something different on the bottom. Any and all suggestions will be appreciated. thanks, jack
Various solutions include camlock fasteners or screws or replacing with a new piano hinge. I am thinking about using screws into nutplates on aluminum lip riveted to the bottom firewall flanges. If this is a good solution, how many screws on each side of the bottom cowling are recommended?
All other piano hinges on the top and sides are still looking good, so I am just thinking of using something different on the bottom. Any and all suggestions will be appreciated. thanks, jack