Appendices « U.S. Model Rocket Sporting Code About the Sporting Code NAR Contest Board Directory Model Rocket Safety Code Introduction Competition Altitude Competition Duration Competition Craftsmanship Competition Miscellaneous Competition Appendices Appendix A: Glossary Appendix B: Abbreviations Appendix C: Return/Scoring Guide Appendix D: Notice of Rulemaking Procedures Appendix E: Altimeters Approved for Contest Use