Major alteration data must be

Major alteration data must be

• A. be manufacturer-approved
• B. be traceable to an approved source.
• C. result from engineering authorization
• D. be submitted to the administrator for review.

Answer: (B)

Major alterations involve substantial changes and require engineering data that has been approved by the FAA or a recognized design authority. Using data that is traceable to an approved source ensures the modification has been evaluated for safety, compatibility, and airworthiness before any work is done. Approved data can come from various sources, not just the original manufacturer, such as FAA-approved STCs or PMAs, or other FAA-approved engineering data. Relying on engineering authorization alone isn’t the full requirement, and submitting the data to the administrator for review after the work is not how it’s done—the data used must already be approved prior to performing the alteration.

Major alterations involve substantial changes and require engineering data that has been approved by the FAA or a recognized design authority. Using data that is traceable to an approved source ensures the modification has been evaluated for safety, compatibility, and airworthiness before any work is done. Approved data can come from various sources, not just the original manufacturer, such as FAA-approved STCs or PMAs, or other FAA-approved engineering data. Relying on engineering authorization alone isn’t the full requirement, and submitting the data to the administrator for review after the work is not how it’s done—the data used must already be approved prior to performing the alteration.