Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 402C Airplanes Modified by Supplemental Type Certificate (STC) SA927NW and Model 414A Airplanes Modified by STC SA892NW

Riepilogo

We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed AD would require a complete inspection of the flap system and modification of the flap control system. This proposed AD was prompted by a report of a Cessna Model 414A airplane modified by STC SA892NW that experienced an asymmetrical flap condition causing an un-commanded roll when the pilot set the flaps to the approach position. We are proposing this AD to prevent failure of the flap system, which could result in an asymmetrical flap condition. This condition could result in loss of control.