20-41A - Substitute Technical Standard Order (TSO) Aircraft Equipment
- Date Issued
- April 05, 1977
- Responsible Office
- AIR-120, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
- Sets forth an acceptable means for complying with rules governing aircraft equipment installations in cases involving the substitution of technical standard order equipment for functionally similar TSO approved equipment.
- AC20-41A.pdf (PDF, 143 KB)