Document ID: chunk:federal_register_of_legislation:F2005L02397:body:0:p2
Version: federal_register_of_legislation:F2005L02397
Segment Type: other
Provision Reference: 
Character Range: 3012–4368

In addition, some engage solenoid valves may be labelled with only the name "Bertea", rather than "Parker" or "Parker-Bertea".
Compliance:     1. Within 5 years or 15,000 flights after 25 February 1999 or at the next time the PCU is removed for maintenance, whichever is the earlier.

                2. Before further flight.

             The compliance times remain unchanged by this issue.
             This Amendment becomes effective on 29 September 2005.
Background:  Investigation into the Boeing 737 flight control system has revealed system anomalies, which, if not corrected, could lead to reduced controllability or uncommanded control input.  This Directive was issued as a direct result of these investigations to remove a potential source of failure within the yaw system.

             Amendment 1 clarified component identification and reflected the requirements of the Country of Origin Aviation Authority.

             Amendment 2 is issued in response to FAA AD 2002-20-07, which requires incorporation of a new rudder control system; which when incorporated, supersedes the requirements of AD 97-09-15 R1, the Requirement document of this Directive.

             The original issue of this Airworthiness Directive became effective on 17 July 1997.

David Punshon
Delegate of the Civil Aviation Safety Authority

19 August 2005