After a spate of R22 accidents (from when it was first certified onwards) the FAA issued a Special Federal Aviation Regulation (SFAR) known as SFAR 73. SFAR 73 details training requirements for pilots of both R22 and R44 helicopters in order to maintain the safe operation of these helicopters. The IAA have no adopted SFAR 73 which requires all pilots of the Robinson R22 and R44 to be up-to-date with it.