Document ID: chunk:federal_register_of_legislation:F2008L01363:body:0:p3
Version: federal_register_of_legislation:F2008L01363
Segment Type: other
Provision Reference: 
Character Range: 12287–13339

many of these assemblies were manufactured and sent to the field with the part number identification placard installed over the alternate static air source selector valve port.  The Civil Aviation Safety Authority (CASA) has no way of determining which aeroplanes have the remaining problem alternate static air source selector valve assemblies installed without having all of the affected aeroplanes and spares stock inspected.
             This condition, if not corrected, could result in the altimeter, airspeed and vertical speed indicators displaying erroneous indications.  This could cause the pilot to react to incorrect flight information and possibly result in loss of control.

   CASA has varied the inspection requirements to allow the aeroplane operator to determine if a P/N 2013142-18 selector valve has been installed since 19 November 2007.  Aeroplanes that may have had the selector valve installed during manufacture will still have to be inspected.

James Coyne
Delegate of the Civil Aviation Safety Authority

6 May 2008