A-09-031
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Require a comprehensive evaluation of the wing and aileron system on the Zodiac CH-601XL, including ground vibration tests, to identify design and/or operational changes that will reduce the potential for flutter; the evaluation should give significant consideration to the benefits of installing mass-balanced ailerons and should also address the adequacy of cable tension values specified by Zenair.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to require a full evaluation of the wing and aileron system on the Zodiac CH-601XL, including ground vibration tests, to find design or operational changes that lower the risk of flutter. The evaluation should weigh the benefits of installing mass-balanced ailerons and check whether Zenair's specified cable tension values are sufficient.
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 Alternate Action |
|---|---|
| Mode | Aviation |
| Closed | Sep 12, 2011 |
| NTSB number | LAX06LA105 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).