FAQ: What Is A 337 In Aviation?

What is FAA Form 337 Field approval?

Note: An ASI (or an appropriately rated DAR) approves data on FAA Form 337 for a major repair or alteration to a specific aircraft, powerplant, propeller, or appliance.

Who can sign a Form 337?

If the alteration is minor, the approval can be done by any licensed A&P mechanic. However, if the alteration is deemed to be major, it requires a mechanic with an Inspection Authorization (IA), in order to sign the approval block on the 337 form and submit it to the FAA.

Where do I mail a 337?

What address do I mail the FAA Form 337 for a newly installed supplemental type certificate (STC)? ANSWER: Completed forms should be submitted to the Aircraft Registration Branch, AFS-750, PO Box 25504, Oklahoma City, Oklahoma 73125.

What are Form 337s?

Form FAA 337 – MAJOR REPAIR & ALTERATION (Airframe, Powerplant, Propeller, or Appliance) – Document Information. About FAA. All Visitors Federal Aviation Administration Search.

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What is a FAA 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.

What is meant by Field approval?

A field approval is one of the means used by the FAA to approve technical data used to accomplish a major repair or major alteration. Technical data so approved becomes “technical data approved by the Administrator.” This type of approval may be accomplished for one-time approval.

What is a minor repair in aviation?

Minor repair means a repair other than a major repair. That sounds simple enough but there is another big difference between a major repair /alteration and a minor repair /alteration. Major repairs or alterations must be performed in accordance with approved data.

Can an A&P sign off an STC?

The selected ” A&P ” may allow an “Owner assisted” install of the STC. The terms should be fully worked out before anybody starts work with said ” A&P “. I would advise against you installing and then finding a sign off.

Which is classified as a major repair?

major repair even though no other alteration or repair is performed. Which is classified as a major repair? The splicing of skin sheets.

What is a major repair on aircraft?

Major Repair: A repair that fits one or more of the following: Might appreciably affect airworthiness by changing weight, balance, structural strength, performance, powerplant operation, or flight characteristics if improperly done; or.

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What is advisory circular 43.9 A?

Document Information This advisory circular ( AC ) provides instructions for completing Federal Aviation Administration (FAA) Form 337, Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance).

Who is responsible for ensuring that all aircraft maintenance records are kept up to date?

For section (a)(2) it’s for the life of the aircraft. The owner or operator shall make all maintenance records required to be kept by this section available for inspection by the Administrator or any authorized representative of the National Transportation Safety Board (NTSB).or any law enforcement officer.

What are the two types of Airworthiness Directives?

Types of Airworthiness Directives (ADs)

  • Notice of Proposed Rulemaking ( NPRM ), followed by a Final Rule.
  • Final Rule; Request for Comments.
  • Emergency ADs.

What is a major repair?

Major repair means a repair: (1) That, if improperly done, might appreciably affect weight, balance, structural strength, performance, powerplant operation, flight characteristics, or other qualities affecting airworthiness; or.

What is a FAA Form 8110 3 used for?

FAA Form 8110-3 is titled “STATEMENT OF COMPLIANCE WITH THE FEDERAL AVIATION REGULATIONS” and is used to approved or recommend for approval the data used in making alterations or repairs to aviation products or articles.

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