Regulations and Government
Complex STC proposal might have wide effect
The FAA is proposing a “Policy for Complex Supplemental Type Certificates (STC) 1” that will change FAR 21.31 (type design) and 21.53 (statement of conform

The FAA is proposing a “Policy for Complex Supplemental Type Certificates (STC) 1” that will change FAR 21.31 (type design) and 21.53 (statement of conformity) by introducing a new classification of STC known as “complex STCs.”

If it is implemented, the FAA will give greater scrutiny to applicants proposing complex STCs defined as “an extensive design change to a type-certificated product, or a simple design change that interfaces with an existing complex system and incorrect assumptions about the complex system could have safety implications for the airplane.”

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