Gama Charters of Stratford, Conn., and Hop-A-Jet Worldwide Jet Charter of Fort Lauderdale, Fla., on Friday became the latest air charter operators to gain acceptance on the Air Charter Safety Foundation’s industry audit standard registry (IAS). They join 14 operators that have completed the IAS audit and achieved registered status with the ACSF since the program’s inception in 2009.

The IAS audit, valid for two years, provides a comprehensive, independent review of an operator’s compliance with safety and security regulations, as well as its implementation and adherence to a safety management system.