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AFSSP has answered these concerns with facts and data showing that the fuel tank systems of the
world fleet are soundly designed and do not tend to degrade as airplanes age. This survey process
has also showed where improvements can be made to further enhance fuel-system safety and
ensure the continuing airworthiness of the in-service fleet.
Although significant airworthiness issues were not found, the AFSSP did identify a number of
opportunities for further enhancing fuel system safety. In general, identified issues were specific to
or unique for a particular manufacturer and aircraft type design. As such, each manufacturer is
developing the necessary inspections or corrective actions to address these issues, as described in
working group report sections of the document.
AIRBUS AP2255
Procedure
Issue: Draft A1 Date: February 2002 Page 1 of 37
3D modelling rules for CATIA V5
Owner’s Approval:
Name : Bruno MAITRE EMK-T
Function : Head of CATIA V5 Methods for French
Team
 Airbus 2002 . All rights reserved. This document contains Airbus proprietary information and trade secrets. It shall at all times
remain the property of Airbus; no intellectual property right or licence is granted by Airbus in connection with any information
contained in it. It is supplied on the express condition that said information is treated as confidential, shall not be used for any
purpose other than that for which it is supplied, shall not be disclosed in whole or in part, to third parties other than the Airbus
Members and Associated Partners, their subcontractors and suppliers (to the extent of their involvement in Airbus projects),
without Airbus prior written consent.
Authorization:
Date :
Name : Ulrich SCHUMANN-HINDENBERG
Function : Head of CAD-CAM CM (EMK)
SCOPE:
The aim of this document is to list the general rules to be complied with for the 3D
modelling of all types of parts.
AIRBUS AP2255
3D modelling rules for CATIA V5
Issue: Draft A1 Date: February 2002 Page 2 of 37
Table of contents
1 Introduction............................................................................... 4
2 General rules............................................................................. 5
2.1 Designation and numbering of files......................................................... 5
2.2 Positioning baseline .................................................................................. 5
2.3 Elements to be distributed on layers....................................................... 5
2.4 Modelling of parts in context.................................................................... 5
2.5 Modelling of detail parts............................................................................ 5
2.6 Modelling of equipped parts with unique representation...................... 6
2.7 Modelling of equipped parts with multiple representations.................. 6
2.8 Symmetrical parts...................................................................................... 7
2.9 Variant parts ............................................................................................... 8
2.10 Parts with complex surfaces .................................................................... 8
2.11 Conditions of supply ................................................................................. 8
2.12 Drill-holes ................................................................................................... 9
2.13 Removability volume................................................................................. 9
2.14 Kinematic volume...................................................................................... 9
3 Specific rules........................................................................... 10
3.1 Machined parts......................................................................................... 10
3.2 Sheet metal parts ..................................................................................... 10
3.3 Panels ....................................................................................................... 10
3.4 Profiled parts............................................................................................ 10
3.5 Piping ........................................................................................................ 10
AIRBUS AP2255
3D modelling rules for CATIA V5
Issue: Draft A1 Date: February 2002 Page 3 of 37
3.6 Electricity.................................................................................................. 10
3.7 Composite ................................................................................................ 10
4 Structuring of data in a CATPart ........................................... 11
　
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