Major alteration

Major alteration means an alteration not listed in the aircraft, aircraft engine, or propeller specifications -
(1) That might appreciably affect weight, balance, structural strength, performance, powerplant operation, flight characteristics, or other qualities affecting airworthiness; or
(2) That is not done according to accepted practices or cannot be done by elementary operations.

Source

14 CFR § 1.1

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Scoping language

As used in Subchapters A through K of this chapter, unless the context requires otherwise:

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