Appendix A Supplemental Study Materials for Aircraft Weight and Balance FAA Publications  (check for most current revision) A-1 • www.faa.gov, Light Sport Aircraft (multiple electronic documents) • Order 8130.2, Airworthiness Certification of Aircraft and Related Product • FAA-H-8083-30, Aviation Maintenance Technician Handbook—General  • AC 120-27, Aircraft Weight and Balance Control • AC 90-89, Amateur-Built Aircraft and Ultralight Flight Testing Handbook • AC 43.13-1, Acceptable Methods, Techniques, and Practices—Aircraft Inspection and Repair • AC 23-21, Airworthiness Compliance Checklists Used to Substantiate Major Alterations for Small Airplanes • Advisory Circular (AC) 20-161, Aircraft Onboard Weight and Balance Systems