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AD/B747/85 Amdt 5 - Corrosion Prevention and Control Program
Boeing 747 Series AeroplanesBoeing 747 Series Aeroplanes
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Boeing 747 Series Aeroplanes
| AD/B747/85 Amdt 5 | Corrosion Prevention and Control Program | 11/2009 DM |
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| Applicability: | Model 747-100, -100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F, 747SR, and 747SP series aircraft. |
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| Requirement: | Action in accordance with the technical requirements of FAA AD 90-25-05 R1 Amdt39-15327.Corrosion classified as level 1 need not be reported.Level 2 corrosion may be consolidated with a sixty day report of corrective action, and submitted to the local CASA Field Office under cover of a single SDR.Level 3 corrosion shall be reported by SDR.Note 1: Boeing Document D6-36022 Rev D, or later FAA approved revision, is associated with FAA AD 90-25-05 R1.Note 2: Boeing Document D621U400-MRB, at Revision: Dec 2007,or later FAA approved revision, is an approved alternative means of compliance to FAA AD 90-25-05 R1 for Boeing Model 747-400 series aircraft only.Note 3: References made in the FAA AD text to the following; Administrator FAA, FAA Principal Inspector (PI), or Manager Seattle Aircraft Certification Office (ACO), shall be read as Civil Aviation Safety Authority Field Office. |
| Compliance: | As specified in the Requirement document. |
| This Amendment becomes effective on 2 September 2009. | |
| Background: | The Country of Origin Airworthiness Authority requires implementation of a corrosion prevention and control program to prevent the degradation of the structural capabilities of the affected aircraft.Amendment 1 introduced a note which specified the reporting requirements when corrosion is found as a result of the CPCP.Amendment 2 introduced a method of compliance other than the Country of Origin AD to address current in-production aircraft. |
| Amendment 3 clarified the alternative means of compliance for Model 747-400 aircraft.Amendment 4 clarified the applicability of the existing AD by specifying which Model 747 aircraft are affected, because certain new variants that have not yet been certified would have been subject to the requirements of this Directive.Amendment 5 is issued to allow use of later revisions of Boeing Document D621U400-MRB as an AMOC to FAA AD 90-25-05 R1. |
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Image unavailable in extracted text David Villiers Delegate of the Civil Aviation Safety Authority