337 for interior plastic
Otis,
But as an A&P (not sure if you are or not, I'll assume you are for the
discussion) aren't you allowed to self-certify that a part is
substantially similar to the original, and therefore just install it? I
know that my A&P has made brackets for me and says that is how he is
able to replace them with OEM without a 337.
-Robert
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