- April 16, 2021, 10:50 AM The Air Charter Safety Foundation (ACSF) endorsed the National Transportation Safety Board’s inclusion of safety management systems (SMS), crash-resistant recorders, and flight data monitoring (FDM) programs on the 2021/22 “Most Wanted" list of transportation safety improvements, saying the recommendations will create a safer charter industry. The NTSB this month updated its Most Wanted list, including a call for FAA to require, as well as verify the effectiveness of, SMS in all revenue passenger-carrying operations. In addition, a second focus area on the list combined a call for mandatory crashworthy recorders and the adoption of flight data monitoring programs. ACSF said the recommendations could help prevent accidents, reduce injuries, and save lives.