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This document provides detailed instructions for completing FAA Form 337, which is used to record major repairs and alterations to aircraft, including airframes, powerplants, propellers, and appliances. It outlines the purpose of the form, related regulations, and specific instructions for filling out each section of the form. The document also explains the administrative processing of the form and emphasizes the importance of compliance with FAA regulations.

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What is considered a major alteration?

FAR 1 defines a major alteration as an alteration not listed in the aircraft, aircraft engine, or propeller specifications that might appreciably affect weight, balance, structural strength, performance, power plant operation, flight characteristics, or other qualities affecting airworthiness or that is not done

What is the EPAs definition of a major repair?

EPA defines major repairs as Maintenance, service, or repair that involves removal of the appliances

What constitutes a major repair or alteration?

FAR 1 defines a major repair as a repair that, if improperly done, might appreciably affect weight, balance, structural strength, performance, power plant operation, flight characteristics, or other qualities affecting airworthiness, or that it is not done ing to accepted practices or cannot be done through

What document contains the instructions for completion of FAA form 337?

AC 43.9-1E - Instructions for Completion of FAA Form 337 (OMB No.

What is a form 337 used for?

The person who performs or supervises a major repair or major alteration must prepare FAA Form 337. The form is executed at least in duplicate and is used to record major repairs and major alterations made to an aircraft, airframe, powerplant, propeller, appliance, or a component part thereof.

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What type of data is approved for form 337?

(2) Data used as a basis for approving major repairs or alterations for return to service must be FAA-approved prior to its use for that purpose and includes: FAR (e.g., airworthiness directives), ACs (e.g., AC 43.13-1A under certain circumstances), TSOs parts manufacturing approval (PMA), FAA- approved

What classifies as a major repair?

The term major repair, for the purposes of identifying construction subject to the Prevailing Wage Law, means: the restoration of a facility to such a condition that it may be effectively utilized for its designated purpose.

What is the difference between a repair and an alteration?

Since 14 CFR 1.1 does not define either term, we look to part 14 CFR 43.13, which requires an article be returned to its original or properly altered condition. Therefore, a repair is an action that returns the article to its original condition, while an alteration creates a properly altered condition, or a

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What is considered a major alteration?

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What constitutes a major repair or alteration?

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What is a form 337 used for?

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What type of data is approved for form 337?

What classifies as a major repair?

What is the difference between a repair and an alteration?

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