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AD/PA-38/21 Amdt 1 - Vertical Fin Forward Spar Attachment Plate Replacement Life Limits
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Turn the raw legal text into a practical explanation grounded in AD/PA-38/21 Amdt 1 - Vertical Fin Forward Spar Attachment Plate Replacement Life Limits.
| AD/PA-38/21 Amdt 1 | Vertical Fin Forward Spar AttachmentPlate Replacement Life Limits | 13/2008 |
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| Applicability: | All model PA-38-112 with S/Nos. 38-81A0001 to 38-82A0122. |
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| Requirement: | 1. On aircraft with S/No. 38-81A0001 to 38-82A0101 which do not have Piper Kit No. 764421 installed, upon achieving 3000 hours time in service, and at intervals not exceeding 3000 hours time in service, replace the vertical fin forward spar attachment plate, Piper P/N 77553-05.Note 1: USA AD 82-27-08 (b)(1) refers.2. On aircraft with S/No. 38-81A0001 to 38-82A0101 which have Piper Kit No. 764421 installed, upon achieving 5000 hours time in service, and at intervals not exceeding 5000 hours time in service, replace the vertical fin forward spar attachment plate, Piper P/N 77553-05.Note 2: USA AD 82-27-08 (b)(2) and Piper SB No. 710 refer.3. On aircraft with S/No. 38-82A0102 to 38-82A0122, upon achieving 5000 hours time in service, and at intervals not exceeding 5000 hours time in service, replace the vertical fin forward spar attachment plate, Piper P/N 77553-05.Note 3: USA AD 82-27-08 (c) refers.Note 4: For aircraft with S/No. 38-82A0123 and higher, the retirement time for P/N 77553-05 is specified in the FAA-approved Airplane Flight Manual. |
| Compliance: | Compliance with the original issue of this Directive constitutes compliance with Amendment 1. |
| This Amendment becomes effective on 18 December 2008. | |
| Background: | Fatigue testing of the empennage structure has established replacement life limits. |
| Amendment 1 aligns the requirement for aircraft which do not have Piper Kit No. 764421 installed with the requirement in USA AD 82-27-08 (b)(1). Amendment 1 adds aircraft with S/Nos. 38-82A0102 to 38-82A0122, and adds Note 4 regarding aircraft with S/Nos. 38-82A0123 and higher. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
29 October 2008