Document ID: chunk:federal_register_of_legislation:F2006L03799:body:0:p2
Version: federal_register_of_legislation:F2006L03799
Segment Type: other
Provision Reference: 
Character Range: 4729–5641

FAA has been advised of numerous reports of internal component failure of SKY497 installations which changes the antenna configuration from a top to a bottom mount.  The change in configuration would result in target indications appearing on the incorrect side of the aeroplane (ie the actual target at the 9 o'clock position relative to the aircraft shows on the SKY497 installation in the 3 o'clock position).  This directive requires that the antenna configuration be verified each time the system is powered up.

             This amendment introduces software changes that verifies the correct antenna configuration each time an aircraft equipped with the SKY497 system with a top-mounted antenna is powered up.
             The original issue of this Airworthiness Directive became effective on
             24 February 1999.

James Coyne
Delegate of the Civil Aviation Safety Authority

9 November 2006