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Technical Standard Order (TSO)

Regulations & Policies

Title 14 Code of Federal Regulations (14 CFR)

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

Advisory Circulars

  • 20-41, Substitute (TSO) Aircraft Equipment
  • 21-43, Production Under 14 CFR Part 21, Subparts F, G, K, and O
  • 21-46, Technical Standard Order Program
  • 21-50, Installation of TSOA Articles and LODA Appliances


  • 8120.22, Production Approval Procedures
  • 8150.1, Technical Standard Order Program

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