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Is it possible that the R22 and R44 must comply to SFAR-73 because of their piston engines?

Turbine engines (R66) are generally more reliable. Robinson may have also made some changes to the R66 for energy management, mast bumping, low rotor rpm, as per section 3 of SFAR -73. I am not that familiar with the R44/22 to know if these issues have been addressed. Time will tell.

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  • 2 weeks later...

If you have attended the Robinson Safety Course you may have heard Frank, or any of the other instructors, express their opinions on the matter. Ultimately, what it boils down to is that SFAR 73 was initially designed to incorporate the R22 because of the hazards that were associated with the aircraft; and lets face it, the problems typically included under trained pilots, and with the addition of the governor, low RRPM issues significantly decreased. This being said, when the R44 was introduced the FAA decided that it should automatically be placed under SFAR 73. Obviously RHI didn't agree. Hopefully the mentality that Robinson's are the most dangerous helicopters out there has diminished and the R66 will receive the regulatory freedom that it deserves.

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