Summary
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Model A310 airplanes. This proposed AD would require revising the Limitations section of the airplane flight manual by incorporating restrictions for high altitude operations. This proposed AD results from several incidents of pitch oscillations with high vertical loads that occurred during turbulence at high altitudes. We are proposing this AD to prevent pitch oscillations during turbulence, which could result in reduced controllability of the airplane.