# Diamond Aircraft Mandatory Service Bulletin 42-129: No revision named

- Rights: © Diamond Aircraft. Filed by the FAA in regulations.gov docket FAA-2018-0188; AD 2018-10-10 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Diamond Aircraft Mandatory Service Bulletin 42-129](https://openairdocs.org/service-documents/diamond/sb-42-129.md)
- Title as filed: SB42-129-M-r0-inspection-of-exhaust-pipe (1)
- Pages: 5
- PDF: https://openairdocs.org/files/sha256/31/09/310993cd8fa40fc3b5bcee8cda773efcb7deff92cbdc744128f12531a4801a18
- Page: https://openairdocs.org/service-documents/diamond/sb-42-129/file/310993cd8fa4

## Text

This text is OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N.

### Page 1

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### Page 2 (OCR)

Diamond  Diamond Aircraft Industries GmbH  DAI MSB 42-129
AIRCRAFT  N. A. Otto-Straße 5  Page 2 of 5
2700 Wiener Neustadt, Austria  17-May-2017
1.7  Concurrent Documents
None.
1.8  Approval
The technical information or instructions contained in this document relate to the Design
Change Advisories No. MÄM 42-911 and OAM 42-252/d, which have been approved under
the authority of EASA Design Organization Approval ref. EASA.21J.052.
The technical content of this document has been approved under the authority of DOA ref.
EASA.21J.052.
1.9  Accomplishments / Instructions
1. Remove engine cowling for engine installations with affected exhaust P/N installed
i.a.w. AMM section 71-10.
2. Inspect exhaust pipe circumferentially in marked area for cracks.
3. If cracks are found replace exhaust pipe or one time repair as follows:
Cracks up to 50 mm (2 inch) in axial direction may be one time weld-repaired: TIG
welding using 1.4842 filler material and staff qualified according to ISO 24394.
No re-welding of the manifold joint is allowed.
NOTE: Weld repaired exhaust pipes remain subject to the recurring inspection.

### Page 3 (OCR)

Diamond  Diamond Aircraft Industries GmbH  DAI MSB 42-129
AIRCRAFT  N. A. Otto-Straße 5  Page 3 of 5
2700 Wiener Neustadt, Austria  17-May-2017
NOTE: Following types of cracks are
acceptable for repair,
NOT acceptable for repair.
The dot-dashed line indicates position & orientation of the crack.

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