EURUSD
Your shopping cart is empty.
CEN

prEN 9300-205

(Main)

Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 205: Product structure validation

Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 205: Product structure validation

1.1 In scope
This document defines a Recommended Practice for Product Structure validation. The objective is to validate the product structure of data ingested, extracted or re-used by the archive.
This document defines a method to uniquely identify each node in the product structure and to uniquely define the structure of each assembly node.
1.2 Out of scope
This document will not provide validation properties for documents; CAD or other.

Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung und -Bereitstellung digitaler technischer Produktdokumentationen, wie zum Beispiel von 3D-, CAD- und PDM-Daten - Teil 205: Validierung der Produktstruktur

Aeronavtika - LOTAR - Dolgotrajno arhiviranje in iskanje digitalne tehnične dokumentacije o izdelkih, kot so podatki o 3D, CAD in PDM - 205. del: Validacija strukture izdelka

General Information

Status
Not Published
Publication Date
02-May-2027
ICS
01.110 - Technical product documentation
35.240.30 - IT applications in information, documentation and publishing
49.020 - Aircraft and space vehicles in general
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 7/WG 1 - LOTAR Long Term Archiving and Retrieval of Digital Technical Product Data
Current Stage
4020 - Submission to enquiry - Enquiry
Start Date
06-Nov-2025
Completion Date
06-Nov-2025
Ref Project
oSIST prEN 9300-205:2026 - Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 205: Product structure validation
prEN 9300-205:2026prEN 9300-205:2026
PreviousNext
Draft
prEN 9300-205:2026
English language
29 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)


SLOVENSKI STANDARD
01-januar-2026
Aeronavtika - LOTAR - Dolgotrajno arhiviranje in iskanje digitalne tehnične
dokumentacije o izdelkih, kot so podatki o 3D, CAD in PDM - 205. del: Validacija
strukture izdelka
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical
product documentation such as 3D, CAD and PDM data - Part 205: Product structure
validation
Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung und -Bereitstellung digitaler
technischer Produktdokumentationen, wie zum Beispiel von 3D-, CAD- und PDM-Daten -
Teil 205: Validierung der Produktstruktur
Ta slovenski standard je istoveten z: prEN 9300-205
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
49.020 Letala in vesoljska vozila na Aircraft and space vehicles in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 01.110; 35.240.30; 49.020
English Version
Aerospace series - LOTAR - LOng Term Archiving and
Retrieval of digital technical product documentation such
as 3D, CAD and PDM data - Part 205: Product structure
validation
Luft- und Raumfahrt - LOTAR - Langzeit-Archivierung
und -Bereitstellung digitaler technischer
Produktdokumentationen, wie zum Beispiel von 3D-,
CAD- und PDM-Daten - Teil 205: Validierung der
Produktstruktur
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 9300-205:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
1.1 In scope . 6
1.2 Out of scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Node Unique Definition . 7
4.1 General. 7
4.2 Detail Node . 7
4.3 Assembly Node . 7
5 Attribute Validation Properties . 8
5.1 General. 8
5.2 AHashAttributes . 8
5.3 AHash . 8
5.4 BHash and CHash . 9
6 Data Definition . 9
6.1 General. 9
6.2 Text . 9
6.2.1 General. 9
6.2.2 End-Of-Line (CR-LF, LF-CR, LF) . 10
6.3 Integer . 10
6.4 Double . 10
6.4.1 General. 10
6.5 Date and Time Representations . 11
6.5.1 General. 11
6.5.2 Date . 11
6.5.3 Time (UTC) . 11
6.5.4 Date Time (UTC) . 12
6.6 Boolean . 12
7 Hash Identification . 12
7.1 General. 12
7.2 Hash Algorithm . 12
7.2.1 General. 12
7.2.2 SHA-1 . 12
7.3 Hash Specification . 12
8 Example Product Structure with XML . 12
8.1 General. 12
8.2 Detail Node Examples . 14
8.2.1 General. 14
8.2.2 Company Detail . 14
8.2.3 Industry Standard Detail . 16
8.3 Assembly Examples . 17
8.3.1 General . 17
8.3.2 Assembly Examples with a Single Child . 17
8.3.3 Assembly Example with Multiple Children . 20
8.3.4 Assembly Example with Child Positions. 21
8.3.5 MultiValuated Attribute Examples . 24
Annex A (informative) Metadata for Archive Packages . 27
Annex B (informative) Example: SHA-1 specification . 28
Bibliography . 29

European foreword
This document (prEN 9300-205:2025) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
Introduction
This document is intended to clearly describe the recommendations of the LOTAR PLM Team as it
pertains to product structure validation. The document includes the outcomes of the research contracted
by the LOTAR PLM team. As an example of implementation this document is referenced by the
recommended practices developed by the MBx Implementor Forum (PDM-IF) “Recommended Practices
for STEP AP242 Domain Model XML Product & Assembly Structure”.
The LOTAR team is an international working group jointly hosted by ASD-Stan and the ProSTEP iVIP
Association in Europe, and PDES Inc, and AIA in the US. Its aim is to develop a standard de-signed to
provide the capability to store digital product information in a standard neutral form that can be read
and reused throughout its lifecycle, independent of changes in the IT application environment originally
used to create it. The multi-part standard EN/NAS 9300 covers both the information content and the
processes required to ingest, store, administer, manage and access the information.
The scope of this technical report refers to LOTAR Part 2xx.
It is recognized in LOTAR PLM that configured Product Structures are the key to successful archive and
retrieval of PDM data. These product structures shall be maintained precisely and a proof that this has
been accomplished is required. Product structures can only be reused if the exact product structure
content is known to represent the required structure.
The attribute “validation property” is used to make sure that the part attributes loaded into the second
PDM (or archive) are the same as the ones extracted from the original PDM (or archive). This validation
property is also used to validate that the node represents a re-usable structure. Often nodes will have
similar names in the archive (Part Number), but are archived for different purposes (ex: Reference
Structure which includes configuration, Manufacturing, Conformity, Design and Construction, Usage,
etc.). Typically, a structure stored for th
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

CEN
EN 9300-007:2025(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 007: Terms and definitions
SIST EN 9300-007:2025

This document defines the common terms, abbreviations and references used throughout the EN 9300 series of standard parts.

  • Standard
    41 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-001:2024(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 001: Structure
SIST EN 9300-001:2024

This document defines the structure and content for the long-term preservation of digital product and technical data. EN 9300 is broken into a series of separate standard parts to make the standard applicable for different business requirements and extensible for further long-term archiving formats.
The following outlines the total scope of this document:
-   for the purpose of this document, structure, and content of EN 9300 standard parts are detailed.

  • Standard
    16 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-125:2023(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 125: Explicit CAD assembly structure with Graphic Product and Manufacturing Information (PMI)
SIST EN 9300-125:2024

1.1 Introduction
This document defines the requirements for the long-term digital preservation of the presentation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of CAD assembly structure. The goal is to preserve this 3D information, without loss, with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
This will allow the retrieval of the assembly structure including the placement information.
This standard extends EN 9300-115 “Explicit CAD Assembly Structure” by including assembly level PMI.
PMI for the assembly structure can be recorded in the same file as the geometry, can be in a nested assembly structure or the PMI will be contained in its own separate file (Side-Car).
The PMI elements shall be presented on the graphic level only (i.e. polyline, tessellated).
1.2 Out of scope
The following is outside the scope:
- The archiving of assembly Form Features.
- Semantic PMI representation is out of scope for this document.
- The geometry defined at assembly level is out of scope for this document.
(This document covers PMI at the assembly level only.)

  • Standard
    24 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-120:2023(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 120: CAD 3D explicit geometry with graphic product and manufacturing information
SIST EN 9300-120:2024

1.1 Introduction
This document defines the requirements for the long term digital preservation of the presentation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of single CAD parts. The goal is to preserve this 3D information with respect to the geometry and related PMI produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
The requirements of EN 9300 110 “CAD mechanical 3D explicit geometry information” about the preservation of the 3D explicit shape shall apply within this document.
The meaning of terms "Presentation" and "Representation", defined in the EN 9300 100 “Common concepts for Long term archiving and retrieval of CAD 3D mechanical information” is required to understand this EN 9300 document.
1.2 In scope
The following outlines the total scope of this document:
- the Presentation of 3D geometrical dimension and tolerance, and 3D annotation attributes;
- their possible semantic links with 3D Geometric shape;
- User Defined Attributes: that are assigned to 3D geometric entities or at the part level.
For the purpose of this document, the semantic definition is at the level that supports associative “Cross-highlighting”, to illustrate the portion of the geometry to which a PMI element applies.
In this version, the technology used to preserve this 3D information is based on polyline and tessellated presentation. Polyline presentation is a conversion to lines and curves of all 3D annotations by the STEP interfaces of the CAD system, including validation properties.  Tessellated presentation is a conversion to tessellated curves and tessellated faces. The main use cases are the Certification and Product Liability of static information, however, re-use is also possible after the deletion of previous PMI and creation of new PMI (refer to clause 3 for definition).
1.3 Out of scope
The following is outside the scope:
- machine-interpretable PMI “Representation”;
- how to preserve additional information:
- - property rights;
- -form features;
- -machining features;
- CAD Assemblies.

  • Standard
    26 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-121:2023(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D CAD and PDM data - Part 121: Semantic representation of CAD 3D Explicit Geometry with Product and Manufacturing Information
SIST EN 9300-121:2024

1.1 Introduction
This document defines the requirements for the long term digital preservation of the Semantic Representation of Product and Manufacturing Information (PMI) with their possible links to the 3D explicit shape and geometry of single CAD parts. The goal is to preserve this 3D information, without loss, with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300 003 “Fundamentals and Concepts”.
The requirements of EN 9300 110 concerning the preservation of the 3D explicit shape shall apply within this Part.
The term “semantic representation” is defined in Clause 3 “Terms, definitions and abbreviations”.
1.2 In scope
The following outlines the total scope of EN 9300 121:
- machine-interpretable PMI “Semantic Representation” (Refer to clause 3 for definition);
- the association of the above with 3D geometric shapes;
- the possible association of the above with Presentation of 3D Product and Manufacturing Information (PMI), and 3D annotations as defined in EN 9300 120.
In EN 9300 121, the technology used to preserve this 3D information is based on semantic representation. The main use cases are Certification, Product Liability and Design re-use.
For the purpose of this document, the semantic definition is at the level that supports associative “Cross-highlighting” for the purpose of human readability.
1.3 Out of scope
The following is outside the scope:
- PMI presentation (defined in EN 9300 120);
- User defined attributes that are assigned to 3D geometric entities or at the part level. The archiving of the UDA is defined in EN 9300 120.
- How to preserve additional information:
- - property rights;
- - form features;
- - CAD Assemblies.
- The semantics of special Notes outside the scope of PMI: ITAR/EAR, proprietary, and title block information, etc.

  • Standard
    18 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-100:2018(Main)
Aerospace series - LOTAR - Long Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 100: Common concepts for Long term archiving and retrieval of CAD 3D mechanical information
SIST EN 9300-100:2018

1.1   Introduction
This European Standard defines common fundamental concepts for Long Term Archiving and Retrieval of CAD mechanical information for elementary parts and assemblies. It details the "fundamentals and concepts" of EN 9300-003 in the specific context of Long Term Archiving of CAD mechanical models.
CAD mechanical information is divided into assembly structure and geometrical information, both including explicit and implicit geometrical representation, Geometric Dimensioning and Tolerancing with Form Features.
The EN 9300-1XX family is organized as a sequence of parts, each building on the previous in a consistent way, each adding a level of complexity in the CAD data model. This includes the detailing of relationships between the essential information for the different types of CAD information covered by the EN 9300-1XX family.
As technology matures additional parts will be released in order to support new requirements within the aerospace community.
1.2   In scope
The present part describes:
-   the fundamentals and concepts for Long Term Archiving and Retrieval of CAD 3D mechanical information;
-   the document structure of the EN 9300-1XX family, and the links between all these parts;
-   the qualification methods for long term preservation of archived CAD mechanical information; more specially, principles for the CAD validation properties and for verification of the quality of the CAD archived file;
-   specifications for the preservation planning of archived CAD information;
-   specific functions for administration and monitoring of CAD archived mechanical models;
-   the definition of Archive Information Packages for CAD data.
1.3   Out of Scope
The following are out of scope for this part:
-   Long Term Archiving of CAD 2D drawings;
-   other CAD business disciplines, such as piping, tubing, electrical harnesses, composite, sheet metal design, kinematics.
This version does not include:
-   fundamental and concepts for parts EN 9300-120 version 2, EN 9300-125, 1 EN 9300-130.

  • Standard
    58 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-115:2018(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 115: Explicit CAD assembly structure
SIST EN 9300-115:2018

EN 9300-010 provides an overview description for the recommended processes for archiving of 3D product data, e.g. 3D CAD and PDM data. The processes are described in EN 9300-011 to EN 9300-016.

  • Standard
    19 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-110:2018(Main)
Aerospace series - LOTAR -LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 110: CAD mechanical 3D Explicit geometry information
SIST EN 9300-110:2018

1.1   Introduction
This document defines the requirements on a digital archive to preserve for the long term the 3D explicit geometry of single CAD parts. The goal is to preserve the 3D information without loss with respect to the geometry produced by the original CAD system, following the principles laid down in EN 9300-003 "Fundamentals and Concepts" including the use of an open data format.
1.2   In scope
The following is in scope of this part of EN 9300:
-   business specification for long term archiving and retrieval of CAD 3D explicit geometry (see Clause 5);
-   essential information of CAD 3D explicit geometry (solids, curves, surfaces, and points) to be preserved (see Clause 6);
-   data structures detailing the main fundamentals and concepts of CAD 3D explicit geometry (see Clause 7);
-   verification rules to check CAD 3D explicit geometry for consistency and data quality (see Clause 8);
-   validation rules to be stored with the CAD 3D explicit geometry in the archive to check essential characteristics after retrieval (see Clause 9).
NOTE   This includes the geometrical external shape resulting from CAD disciplines 3D entities (e.g., 3D Structural components, 3D Tubing, 3D electrical harness, 3D composite, etc.).
1.3   Out of scope
The following is outside the scope of this part of EN 9300:   
-   the formal definition of validation and verification rules to check 3D explicit geometry for consistency and data quality using a machine-readable syntax;
-   implicit or parametric geometry;
-   Geometric Dimensioning & Tolerancing (GD&T), Product & Manufacturing Information (PMI);
-   assembly structures;
-   presentation of explicit geometry.

  • Standard
    42 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-002:2018(Main)
Aerospace series - LOTAR -LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 002: Requirements
SIST EN 9300-002:2018

This document is a part of the EN 9300 Series. This document addresses requirements for the long term archiving of digital product information, applicable to the international aerospace industry.
Data shall be available to meet regulatory, legal, contractual and business requirements.
Initially, this document sums up the main business requirements for long term archiving of digital product data. Although these requirements are not in themselves normative, when making data available over an extended period, it is a fundamental principle that the contextual data needed to interpret the data is also available.
This document uses the OAIS reference model to provide comparability with other approaches to keeping information available. However, OAIS is a standard reference model for comparison, not a standard for implementation. Consequently, this document defines requirements for processes (and associated technologies) intended to make data available for the life of a product, and does so in terms of the OAIS model.
In dealing with traditional media, the differences between substantial change and unimportant “surface” change are generally self-evident. For example, the yellowing of paper over time, or the encrustation of a gravestone with lichen do not lose the information contained, whereas the loss of pages of a document, or the erosion of the stone do so, and archiving focusses on the preservation of the medium. For digital product data, the medium is unimportant, but the content can be corrupted. The subject of the (many) remaining parts of this standard is the identification of the information that shall be uncorrupted if digital product data is to be usable in the future, and the consequent refinement of processes and procedures to insure this.
This document addresses, archiving of digital product data required for product definition, such as in three dimensional representations a tolerances, material properties, manufacturing data, etc. specification call-outs, product structure and configuration control data, etc. Other parts of the EN 9300 standards will cover more specifically the long term archiving of, for example, composites, electrical systems, product analyses and product simulation information.
This document also addresses managing the evolution of technologies required to ensure the availability and usability of the data for the required archiving period.
This document is not intended to incorporate company specific requirements and does not dictate specific organizational structures within a company. This document does not specify a design or an implementation of an archive system. Actual implementations may distribute responsibilities or break out functionality differently.
This document assumes that all requirements for configuration management of the product data are in place and therefore are not specifically described in this document.
If an organization chooses to implement requirements beyond those outlined in this requirements document, those additional requirements shall not conflict or negatively impact the requirements contained in this document.
Purpose:
This document establishes legal and other business requirements for processes intended to preserve digital data. Data needs to be stored and maintained so that data is retrievable and usable for the required archiving period. In addition, for some business requirements, data needs to be authentically preserved and accessed.
This standard is intended to allow for different implementations based on a company’s specific business environment.

  • Standard
    31 pages
    English language
    sale 10% off
    e-Library read for
    1 day
CEN
EN 9300-010:2018(Main)
Aerospace series - LOTAR - LOng Term Archiving and Retrieval of digital technical product documentation such as 3D, CAD and PDM data - Part 010: Overview Data Flow
SIST EN 9300-010:2018

EN 9300-010 provides an overview description for the recommended processes for archiving of 3D product data, e.g. 3D CAD and PDM data. The processes are described in EN 9300-011 to EN 9300-016.

  • Standard
    10 pages
    English language
    sale 10% off
    e-Library read for
    1 day