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#1
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![]() "Andrew Gideon" wrote in message online.com... It sounds from the above like an STC is required before any major alteration because it "provides authority to make the major alteration". Is that right? An STC is one way of getting approval for the alteration. Other "data acceptable to the administrator" is allowed as well. This is called a field approval (or sometimes incorrectly, a one time STC). A lot seems to hinge on the distinction between "major" and "minor" alterations. What is the difference? Given a particular change (ie. replacing a panel overlay, or adding instrument lights), how does one know into which category the change falls? The definitions are here (I'm not going to post them inline as they are a bit long): http://www.access.gpo.gov/nara/cfr/c...4cfr43_00.html Some of it is a gray area. Somethings people read more into it than others. For example, just because something changes the w&b, it is not a major alteration. It is only a major alteration if it changes the permissable envelope. |
#2
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Ron Natalie wrote:
The definitions are here (I'm not going to post them inline as they are a bit long): http://www.access.gpo.gov/nara/cfr/c...4cfr43_00.html Appendix A(a) defines "major alteration". Anything else is "minor"? Some of it is a gray area. Somethings people read more into it than others. For example, just because something changes the w&b, it is not a major alteration. It is only a major alteration if it changes the permissable envelope. Where do you see that? I only see a list of items in A(a); nothing that refers to the W&B. - Andrew |
#3
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![]() "Andrew Gideon" wrote in message online.com... Ron Natalie wrote: The definitions are here (I'm not going to post them inline as they are a bit long): http://www.access.gpo.gov/nara/cfr/c...4cfr43_00.html Appendix A(a) defines "major alteration". Anything else is "minor"? Some of it is a gray area. Somethings people read more into it than others. For example, just because something changes the w&b, it is not a major alteration. It is only a major alteration if it changes the permissable envelope. Where do you see that? I only see a list of items in A(a); nothing that refers to the W&B. 43xA.a (1)(xi). Changes to the empty weight or empty balance which result in an increase ... |
#4
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Ron Natalie wrote:
43xA.a (1)(xi). Changes to the empty weight or empty balance which result in an increase ... Ah. Hidden in plain site. Thanks... - Andrew |
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