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NTSB Safety Recommendations A-10-119 and -120 and reiteration of A-04-63



Title: NTSB Safety Recommendations A-10-119 and -120 and reiteration of A-04-63

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          NTSB SAFETY RECOMMENDATION

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National Transportation Safety Board

Washington, DC 20594

August 6, 2010

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NTSB Safety Recommendation A-10-119 and -120

and Reiteration of NTSB Safety Recommendation A-04-63

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The National Transportation Safety Board recommends that the European Aviation Safety Agency:

Modify European Aviation Safety Agency Certification Specifications for Large Aeroplanes CS-25 to

ensure safe handling qualities in the yaw axis throughout the flight envelope, including limits for

rudder pedal sensitivity. (A-10-119)

After the yaw axis certification standard recommended in Safety Recommendation A-10-119 has been

established, review the designs of existing airplanes to determine if they meet the standard. For

existing airplane designs that do not meet the standard, the European Aviation Safety Agency (EASA)

should determine if the airplanes would be adequately protected from the adverse effects of a

potential aircraft-pilot coupling (APC) after rudder inputs at all airspeeds. If adequate protection does

not exist, EASA should require modifications, as necessary, to provide the airplanes with increased

protection from the adverse effects of a potential APC after rudder inputs at high airspeeds. (A-10-

120)

In addition, the National Transportation Safety Board reiterates the following recommendation to the

European Aviation Safety Agency:

Review the options for modifying the Airbus A300-600 and the Airbus A310 to provide increased

protection from potentially hazardous rudder pedal inputs at high airspeeds and, on the basis of this

review, require modifications to the A300-600 and A310 to provide increased protection from

potentially hazardous rudder pedal inputs at high airspeeds. (A-04-63)


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http://www.ntsb.gov/recs/letters/2010/A-10-119-120.pdf  

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The complete recommendation letter is available on the Web

at the URL indicated above.

The letter is in the Portable Document Format (PDF) and can

be read using the Acrobat Reader 5.0 or later from Adobe

(http://www.adobe.com/prodindex/acrobat/readstep.html).

       

An archive of recommendation letters is available at

http://www.ntsb.gov/recs/letters/letters.htm.

Electronic versions of letters may or may not include

enclosures; however, related publications, accident

briefs, and aviation accident synopses may be found

on the NTSB website.

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