# Diamond Aircraft Mandatory Service Bulletin 40NG-064: Revision 3

- Rights: © Diamond Aircraft. Filed by the FAA in regulations.gov docket FAA-2025-5397; AD 2026-06-03 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Document: [Diamond Aircraft Mandatory Service Bulletin 40NG-064](https://openairdocs.org/service-documents/diamond/40ng-064.md)
- Title as filed: Diamond Aircraft Industries MSB 40NG-064 Rev 3
- Pages: 10
- PDF: https://openairdocs.org/files/sha256/56/65/5665cb7ab9bdeae7452fd168a790afeb2b4bdad60c2fd66de3270ff0a538e51a
- Page: https://openairdocs.org/service-documents/diamond/40ng-064/file/5665cb7ab9bd

## Text

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Diamond Aircraft Industries  WORK INSTRUCTION  ›Diamond  AIRCRAFT*
Model DA 40 NG
Ш  INSTRUCTIONS
NOTE: the following images show the difference between the two types of fuel tank connection
hoses (flexible couplings) in the field.
• D4D-2817-10-70, this fuel tank connection hose has a light blue layer in the cross-section. Only
a fraction of these hoses come from the affected two batches.
D4D-2817-10-70
D4D-2817-10-70_01, this fuel tank connection hose has an all black cross section and is not
affected.
D4D-2817-10-70_01
not affected
WI-MSB 40NG-064 Rev. 0  © DAI 2019 ALL RIGHTS RESERVED, PROPRIETARY DOCUMENT  Internet: diamondaircraft.com
Page 2 of 4  Service & Support Portal: partners.diamondaircraft.com
01 July 2019

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