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FAA Form 337 Training

FAA Form 337 Training. Welcome! This class is to provide you with a basic understanding of the FAA Form 337. You will learn the uses of this form and information about completing some of the blocks. On the next few slides we will see the front and back of the Form 337.

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FAA Form 337 Training

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  1. FAA Form 337Training

  2. Welcome! This class is to provide you with a basic understanding of the FAA Form 337. You will learn the uses of this form and information about completing some of the blocks.

  3. On the next few slides we will see the front and back of the Form 337.

  4. At the top of the form itself are INSTRUCTIONS: See FAR 43.9, FAR 43 Appendix B,and AC 43.9-1…for instructions… It also states that: “This report is required by law. Failure to report can result in a civil penalty for each such violation.”

  5. The current version of FAA Advisory Circular 43.9-1() providesinstructions for completing FAA Form 337, Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance).

  6. FAA Form 337 is used to document two things, and only two things: Major repairs Major alterations

  7. This means that you need to know how to determine what is a major repair or major alteration. That is outside the scope of this class (actually, it is a class all by itself!).

  8. A comment about documenting major repairs. Due to an exception in Part 43, Appendix B(b)2, a Repair Station may document a Major Repair using a signed copy of the work order in lieu of the Form 337. So there may be occasions when you perform a major repair and don’t issue a 337. This is based on customer preference. We will use either a 337 or the work order to document a major repair, depending on what the customer wants.

  9. Appendix B TO PART 43 states: “Execute FAA Form 337 at least in duplicate;” “Give a signed copy of that form to the aircraft owner;” “Forward a copy of that form to the FAA Aircraft Registration Branch in Oklahoma City, Oklahoma, within 48 hours after the aircraft,….is approved for return to service.”

  10. The Duncan Aviation RSGOM states: “An original signed FAA Form 337 is provided to the aircraft owner or operator. A copy shall be sent to the FAA in Oklahoma City and a copy is stored with the work order.” Duncan Aviation minimum requirements: One original, Two copies.

  11. Item (Block) 1 States “Aircraft”. A 337 can only be issued to an aircraft! Not a component part. Doesn’t make any difference if you worked on a cabinet, engine, prop or other appliance. The 337 is for the aircraft the item is installed on. This affects “send in” or spare components in a big way. Here’s how….

  12. NOTE: When a major repair or major alteration is made to a component part, items (blocks) 1, 2, and in some cases 5 will be left blank and the original and duplicate copies of the form (337) will remain with the part until it is installed on an aircraft.

  13. Example

  14. So let’s understand this. We can perform a major repair or alteration to a spare part. We can fill out all of a 337 (including signing it) except items 1 and 2. The part can sit in the warehouse for weeks or months. The person who installs the part onto an aircraft fills out items 1 and 2 and then has 48 hours to forward a copy of the completed 337 to the FAA after approving the aircraft for return to service.

  15. Item (Block) 1 Nationality and registration mark: The FAA only accepts 337s for US registered (N) aircraft. If you are providing a “courtesy” 337 for a foreign registered aircraft, don’t bother sending a copy to the FAA. They won’t take it. The FAA only maintains information for US registered aircraft.

  16. Item (Block) 3 For FAA Use Only. Block 3 is used by the FAA for field approvals. Field what??

  17. Field approval refers to a method of approving the data for a major repair or major alteration. When this method is used by the person completing the 337, all data is submitted to the FAA for approval. Once the FAA has approved the data, they will sign in block 3 showing their approval. This is commonly referred to as a field approval.

  18. If you need to use the field approval method, here’s a tip: Get your data approved before you do the job! There is nothing quite as discouraging as fixing up an airplane in a way you think is great, only to have the FAA disagree and want it done another way! And that could happen if they don’t agree with your data on a field approval.

  19. Item (Block) 6 Conformity Statement! When you sign this, you are taking full responsibility that you know what was done and that it conforms to the data and Part 43 maintenance requirements! At Duncan Aviation, the person signing here must be an Inspector

  20. Block 6 asks for the name and address of the person (agency) who did the work, the kind of agency (mechanic, repair station, etc), their certificate number, the date they finished the work and their signature. Duncan inspectors sign as agents of Duncan Aviation. When signing on behalf of Duncan, we check the box next to “Certificated Repair Station” and use the repair station number, not your personal certificate number.

  21. Notice the statement in box “D”. This is what you are certifying when you sign. You are certifying that the repair or alteration conforms to the description (or data) shown on the back of the 337 along with any attachments. Thus, you are making the conformity statement for the repair or alteration.

  22. Item (Block) 7 Approval for Return to Service! This is the block where the repair or alteration is either Approved for return to service, or Rejected for return to service. If you’re involved with installing a part that has a 337 with it, make sure that item 7 is checked Approved!

  23. Where block 6 says the work conforms to the data, block 7 says it has been inspected and is approved for return to service (also called RTS approval) (RTS = Return To Service) Conformity and RTS approval are two separate steps.

  24. Notice the first line. It says the unit was inspected and then gives you the choice to declare it “Approved” or “Rejected” One of these boxes must be checked! (Hopefully “Approved”) But you must inspect the work before you know if it can be approved. Does this mean you personally must go and look at the repair or alteration and verify every single detail?

  25. No. HOWEVER: If you do not personally inspect every detail, you absolutely have the responsibility to ensure that properly authorized Duncan Aviation inspectors signed off on their respective portions of the job. As a repair station, our system allows an inspector to review individual squawks stamped by other qualified inspectors as a means to determine airworthiness.

  26. Once a date is put in block 7, you started a countdown! You have 48 hours to get a copy in the mail to the FAA. EXCEPT for send in items (those 337s will be mailed by the person installing the item on the aircraft.)

  27. Item (Block) 8 Description of Work Accomplished Sounds self explanatory, right? And to some degree, it is. Describe the work in sufficient detail that a person unfamiliar with the job can understand what was done.

  28. Other things that we want to include in the Description of Work Accomplished: • The FAA ApprovedData that was used. • Any change to the Weight and Balance data. • ICA (Instructions for Continued Airworthiness) information. • Any Flight Manual Supplements.

  29. Instructions for Continued Airworthiness Generally these usually apply to major alterations, but some major repairs may affect the Inspection Program the aircraft is following!

  30. So, if you have performed a major alteration, the FAA wants to ensure the owner/operator has the necessary knowledge to maintain the “altered product”. You must put in some type of information that tells the operator how to inspect and maintain this alteration you just signed off.

  31. * Thank You * That completes the training on FAA Form 337. You now have knowledge of when this form is used, and how to review one to ensure all information is there, and what to do with the completed form. If you have any other questions, feel free to ask any Chief Inspector or Quality Department Inspector.

  32. Test • Instructions for completion of FAA Form 337 are contained in what FAA document? • What is a field approval? • What two types of work may be documented on the 337? • What type of data must be referenced in block 8? • What must be done with the original 337? • How many copies must be made of the 337? • What must be done with the copies? • Will the FAA accept a 337 issued for a foreign registered aircraft? • What data is put in block 8? • Who signs block 3, and why?

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