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  • Ac 21-25b - Approval Of Modified Seating System Initially Approved ... - Faa

Get Ac 21-25b - Approval Of Modified Seating System Initially Approved ... - Faa

U.S. Department of Transportation Federal Aviation Administration Subject: Approval of Modified Seating Systems Initially Approved Under a Technical Standard Order Advisory Circular Date: 01/11/2016.

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How to fill out the AC 21-25B - Approval of Modified Seating System Initially Approved ... - FAA online

This guide provides clear instructions on how to effectively fill out the AC 21-25B form online. The form is essential for individuals and organizations seeking approval for modified seating systems originally sanctioned under a Technical Standard Order.

Follow the steps to successfully complete the online form.

  1. Press the ‘Get Form’ button to obtain the form and display it on your device.
  2. Carefully read the provided instructions and guidance related to the modified seating systems to familiarize yourself with the requirements before filling out the form.
  3. Begin filling in the required fields at the top of the form, providing necessary information such as your contact details and organization name.
  4. In the section dedicated to the nature of the modification, describe the modifications made to the seating system and the rationale for these changes.
  5. Ensure that any documentation supporting the modification, such as design analyses and test results, is referenced in the appropriate section of the form.
  6. Review the compliance statements associated with the modifications to ensure all relevant regulations and requirements are met.
  7. Finalize your input by double-checking all entries for accuracy and completeness.
  8. Save your changes, download a copy of the filled form, and print if necessary. You may also share the form as required.

Complete the AC 21-25B form online today to ensure compliance with FAA requirements for modified seating systems.

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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.

The difference between a major alteration under an STC versus one which is field approved is that the 337 for an STC'd alteration needs no further FAA approval and can be directly submitted to the Aircraft Registry.

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.

A field approval is the granting by an FAA airworthiness safety inspector of an FAA approval for a major repair or major alteration based on examination of data or physical inspection or testing. There are three kinds of field approvals for which the local FAA inspector can sign off in Block 3 of the FAA Form 337.

Part 21 is the FAA regulation that provides the regulatory framework to conduct certification of products and parts. This includes the engineering, airworthiness, production and quality systems.

A supplemental type certificate ( STC ) is a type certificate ( TC ) issued when an applicant has received FAA approval to modify an aeronautical product from its original design.

The Aviation Safety Inspector can sign Block 3 of FAA Form 337 to approve the repair or alteration, or. Additional data from the applicant is needed if the original data package is found to be inadequate, or.

Steps to STC Issuance. ... File an FAA STC application using form 8110- 12 to initiate the certification process. ... Design and Substantiation Data Development. ... Receive TIA from FAA or ODA. ... Prototype Aircraft Installation. ... Inspection and Testing. ... Receive FAA STC. ... Foreign STC Validation.

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© Copyright 1997-2025
airSlate Legal Forms, Inc.
3720 Flowood Dr, Flowood, Mississippi 39232
Form Packages
Adoption
Bankruptcy
Contractors
Divorce
Home Sales
Employment
Identity Theft
Incorporation
Landlord Tenant
Living Trust
Name Change
Personal Planning
Small Business
Wills & Estates
Packages A-Z
Form Categories
Affidavits
Bankruptcy
Bill of Sale
Corporate - LLC
Divorce
Employment
Identity Theft
Internet Technology
Landlord Tenant
Living Wills
Name Change
Power of Attorney
Real Estate
Small Estates
Wills
All Forms
Forms A-Z
Form Library
Customer Service
Terms of Service
Privacy Notice
Legal Hub
Content Takedown Policy
Bug Bounty Program
About Us
Blog
Affiliates
Contact Us
Delete My Account
Site Map
Industries
Forms in Spanish
Localized Forms
State-specific Forms
Forms Kit
Legal Guides
Real Estate Handbook
All Guides
Prepared for You
Notarize
Incorporation services
Our Customers
For Consumers
For Small Business
For Attorneys
Our Sites
US Legal Forms
USLegal
FormsPass
pdfFiller
signNow
airSlate WorkFlow
DocHub
Instapage
Social Media
Call us now toll free:
+1 833 426 79 33
As seen in:
  • USA Today logo picture
  • CBC News logo picture
  • LA Times logo picture
  • The Washington Post logo picture
  • AP logo picture
  • Forbes logo picture
© Copyright 1997-2025
airSlate Legal Forms, Inc.
3720 Flowood Dr, Flowood, Mississippi 39232