Document ID: chunk:federal_register_of_legislation:F2006B08526:body:0:p2
Version: federal_register_of_legislation:F2006B08526
Segment Type: other
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Character Range: 2696–4322

2003-02-04 Amdt 39-13020 and DGAC AD 2003-001(B) refer.

 CFM International Turbine Engines - CFM56 Series

 AD/CFM56/22 (Continued)

            Compliance: For Requirement 1a. - Within 500 hours time in service (TIS) after the effective date of this Directive.

            For Requirement 1b. - As of the effective date of this Directive until 3,000 engine flight hours have been accumulated since the first installation on the current engine or until the harness and coupling have either been replaced with a serviceable part or a part that has a letter "W" following the S/N.

            For Requirement 2 - Within 100 hours TIS after the harness and coupling have been determined to be defective.

            This Airworthiness Directive becomes effective on 20 March 2003.

            Background: This Directive requires the establishment of an EGT baseline and trend monitoring using SAGE, or equivalent, as an option to EGT harness replacement, and if necessary, replacement of certain EGT harnesses and EGT couplings as soon as a slow and continuous EGT drift downward is noticed.

            Both the United States Federal Aviation Administration and the Direction Générale de l'Aviation Civile of France have received reports of erroneous EGT readings. The actions specified by this Directive are intended to prevent unexpected deterioration of critical rotating engine parts due to higher than desired engine operating EGTs.

 James Coyne
 Delegate of the Civil Aviation Safety Authority 30 January 2003

 The above AD is notified in the Commonwealth of Australia Gazette on 26 February 2003.