A Falcon 7X experienced an uncontrolled pitch trim runaway during descent. The crew succeeded in recovering a stable situation and performed an uneventful landing. Analysis of the Digital Flight Data Recorder (DFDR) and Fault History Database (FHDB) confirmed the event, but did not allow explaining the origin of the pitch trim runaway.
This condition, if occurring again, could lead to loss of control of the aeroplane.
To address this potential unsafe condition, Dassault Aviation has proposed to EASA to prohibit, from the effective date of this AD, any flight operations of Falcon 7X aeroplanes, to which EASA agrees by issuing this AD.
http://ad.easa.europa.eu/blob/easa_ad_2 ... 1-0102-E_1
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