Title 14 Code of Federal Regulations

Advisory Circulars (AC)

  • 20-41, Substitute Technical Standard Order (TSO) Aircraft Equipment
  • 20-45, Safetying of Turnbuckles on Civil Aircraft
  • 20-110, Index of Aviation Technical Standard Orders
  • 20-127, Use of Society of Automotive Engineers (SAE) Class H11 Bolts
  • 21-16, RTCA, Inc. Document RTCA/DO-160E, Environmental Conditions and Test Procedures for Airborne Equipment
  • 21.17-1, Type Certification-Airships
  • 43.13-1, [Large AC. This includes Change 1.] Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair

Related Guidance