A-95-005
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FAA: EXAMINE THE APPROPRIATENESS OF THE TEETERING CYCLIC FLIGHT CONTROL USE IN THE ROBINSON R22 AND R44 HELICOPTERS AND MAKE ANY DESIGN AND MODIFICATION CHANGES TO THE CYCLIC AND COLLECTIVE CONTROL SYSTEMS AS NECESSARY TO ENSURE THAT PILOTS-IN-COMMAND AND FLIGHT INSTRUCTORS CAN RESPOND IN TIME TO PREVENT LOSS OF CONTROL THE MAIN ROTOR FOLLOWING IN-FLIGHT MAIN ROTOR ANOMALIES INITIATED BY LOW MAIN ROTOR REVOLUTIONS PER MINUTE OR TURBULENCE ENCOUNTERS IN FLIGHT.
In plain language (FlightFinder summary)
The FAA is asked to review the teetering cyclic flight control system used in Robinson R22 and R44 helicopters and, if needed, modify the cyclic and collective controls so that pilots and instructors can prevent loss of main rotor control during anomalies caused by low rotor RPM or turbulence.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Acceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Apr 2, 1996 |
| NTSB number | DCA95RA011 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).