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Comanche Aft Bulkhead Cracks

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New Member
Sep 23, 2011
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I have a Comanche 180 right now that has developed cracks on the aft most bulkhead in the tail (in the vicinity of the stabilator attach points.)

Had anyone encountered this before? I have come across several pictures of other Comanches (usually pics showing the High Shear Rivet replacement) that appear to have sections cut out of this bulkhead (there are stamped impressions on either side of the torque tube and horn, and these are the sections that appear to have been removed and happen to be where mine is cracked.)

Are there any approved repairs or modifications to this section? It's been thus far impossible to find even a used serviceable replacement.

Part number is 20479-00 or 20479-00


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