Title 14 Code of Federal Regulations (14 CFR)

  • Part 21, Certification Procedures for Products, Articles, and Parts.

Advisory Circulars

  • 20-110, Index of Aviation Technical Standard Orders
  • 20-41, Substitute (TSO) Aircraft Equipment
  • 21-43, Production Under 14 CFR Part 21, Subparts F, G, K, and O

Orders

  • 8110.43, Joint Technical Standard Order Authorization for U.S. Article Manufacturers
  • 8120.22, Production Approval Procedures
  • 8150.1, Technical Standard Order Program