An Faa Form 337 Is Used To Record And Document

FAA Form 337: A Comprehensive Guide to Recording and Documenting Aircraft Alterations

The Federal Aviation Administration (FAA) Form 337, officially titled "Major Repair or Alteration," is a crucial document in the aviation world. It serves as the official record for any major repairs or alterations made to an aircraft. Understanding its purpose, completion, and implications is vital for aircraft owners, mechanics, and anyone involved in aircraft maintenance. This comprehensive guide will delve into every aspect of FAA Form 337, ensuring you have a thorough understanding of its significance.

What is FAA Form 337?

FAA Form 337 is not just a simple form; it's a legal record that verifies significant modifications to an aircraft's airworthiness. It's a critical piece of documentation that affects the aircraft's registration, insurance, and overall legal compliance. Think of it as the official birth certificate for any substantial change made to your aircraft. Without proper completion and filing of this form, you risk significant legal and operational issues.

What constitutes a "Major Alteration" or "Major Repair"?

The FAA doesn't offer a definitive list of what constitutes a major repair or alteration. It's determined on a case-by-case basis, taking into account the extent of the work and its impact on the aircraft's airworthiness. Generally, modifications that significantly alter the aircraft's structure, performance, or systems are considered major alterations. This includes, but isn't limited to:

• Engine changes: Replacing an engine with a different model often requires a Form 337.
• Wing modifications: Any structural changes to the wings, including adding or removing components.
• Avionic upgrades: Significant upgrades to the avionics system, especially those impacting the aircraft's operation or safety.
• Weight and balance changes: Modifications that significantly change the aircraft's center of gravity.
• Structural repairs: Extensive repairs to the aircraft's airframe, especially those impacting its strength or integrity.
• Installation of new equipment: Adding any substantial equipment that affects the aircraft's flight characteristics or performance.

When is FAA Form 337 not required?

While many modifications necessitate Form 337, certain routine maintenance tasks do not. Minor repairs and alterations that don't affect the aircraft's airworthiness or performance are usually exempt. These typically include:

• Regular maintenance: Scheduled maintenance tasks outlined in the aircraft's maintenance manual.
• Minor repairs: Small repairs that don't significantly affect the aircraft's structural integrity or operational capabilities.
• Cosmetic changes: Changes that are purely aesthetic and don't impact the aircraft's performance or safety.

Completing FAA Form 337: A Step-by-Step Guide

The form itself is relatively straightforward, but accurate and complete information is crucial. Here's a breakdown of the key sections:

Section 1: Aircraft Identification

This section requires accurate and detailed information about the aircraft undergoing the modification. This includes:

• Make and Model: Precisely identify the aircraft's manufacturer and model.
• Serial Number: The unique identifier for the specific aircraft.
• N-Number: The aircraft's FAA registration number.

Accuracy is paramount here. Any discrepancies can lead to delays or rejection of the form.

Section 2: Description of Alteration or Repair

This is arguably the most crucial part of the form. You need to provide a clear, concise, and detailed description of the work performed. Vague descriptions can lead to rejection. Include:

• Type of work: Specify if it's a repair or an alteration.
• Specific components affected: Detail the exact parts or systems involved.
• Parts used: List the manufacturer and part numbers of any new components installed.
• Drawings or diagrams: Include any relevant schematics to illustrate the modifications. This is especially important for complex alterations.

Use precise language and avoid ambiguity. The goal is to provide a complete picture of the work conducted.

Section 3: Mechanic's Certification

This section requires the mechanic who performed the work to certify the accuracy of the information provided. This includes:

• Mechanic's name and certificate number: The mechanic must provide their full name and FAA Airframe and Powerplant (A&P) mechanic certificate number.
• Date of completion: The date the work was completed.
• Signature: The mechanic's signature confirming the accuracy of the information provided.

Only an appropriately certified A&P mechanic can complete this section.

Section 4: Owner's Certification

The aircraft owner must also certify that the work described was performed and that they are aware of the alterations.

• Owner's name and address: Full name and current address of the aircraft owner.
• Signature: The owner's signature acknowledging the completed work and accuracy of the form.

The owner's signature confirms their understanding and acceptance of the alterations.

Section 5: FAA Approval

This section is completed by the FAA, indicating their review and approval of the Form 337.

This section is not filled out by the aircraft owner or mechanic.

Submitting FAA Form 337

Once the form is completely and accurately filled out, it must be submitted to the appropriate FAA office. The specific office will depend on your location. You can find contact information for your local FAA Flight Standards District Office (FSDO) on the FAA website.

Keep a copy for your records. This is an important document that will likely be requested during future inspections or transactions.

Consequences of Non-Compliance

Failing to properly complete and submit FAA Form 337 for major alterations or repairs can have severe consequences:

• Aircraft Unairworthy: The aircraft may be deemed unairworthy, grounding it until the proper documentation is filed.
• Legal Penalties: The FAA can impose significant fines or other legal actions.
• Insurance Issues: Insurance coverage may be voided if the modifications aren't properly documented.
• Sale Complications: Selling an aircraft with undocumented modifications can significantly hinder the sale process.

Compliance with FAA regulations is not optional; it's a necessity for safe and legal aircraft operation.

Understanding the Importance of Proper Documentation

The FAA Form 337 is more than just a bureaucratic formality; it's a cornerstone of aviation safety. It provides a clear, auditable trail of modifications made to an aircraft, ensuring that any changes are made to the proper standards. This level of documentation helps:

• Maintain airworthiness: Ensuring the continued airworthiness of the aircraft after modifications.
• Facilitate maintenance: Providing clear records for future maintenance and repairs.
• Improve safety: Contributing to overall aviation safety by accurately documenting all major alterations.
• Protect the aircraft's value: Proper documentation helps maintain the aircraft's value.

Accurate and complete documentation is essential for the safe and legal operation of any aircraft.

Conclusion

FAA Form 337 is a vital document in aviation, providing a formal record of major alterations and repairs made to aircraft. Understanding its purpose, completing it accurately, and submitting it appropriately is crucial for aircraft owners and mechanics. Failure to comply can have significant legal and operational repercussions. Prioritize accuracy and completeness when completing this form to ensure your aircraft's continued airworthiness and legal compliance. Remember, maintaining accurate records isn't just about paperwork; it's a commitment to safety and responsible aircraft ownership. Consult with an A&P mechanic and potentially legal counsel if you have questions regarding specific modifications or your responsibilities.