A-94-144
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: In conjunction with the National Aeronautics and Space Administration and Robinson Helicopter Company, conduct wind tunnel and modeling tests to examine flight parameters of the R22 helicopter to determine the helicopter's design characteristics that are related to main rotor divergent behavior; and if any abnormal rotor system performance characteristics are found, take the necessary actions to assure proper dissemination of the information and to modify the R22 design.(Superseded by A-96-9 through -13) (Urgent)
In plain language (FlightFinder summary)
The Federal Aviation Administration, together with NASA and Robinson Helicopter Company, is asked to perform wind tunnel and modeling tests on the R22 helicopter to investigate design features linked to main rotor divergent behavior. If any abnormal rotor system performance is found, the FAA should ensure that information is properly shared and modify the R22 design.
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| Status | Closed - Acceptable Action/Superseded |
|---|---|
| Mode | Aviation |
| Closed | Apr 2, 1996 |
| NTSB number | LAX92FA267 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).