SIST EN 9227-1:2025
(Main)Aerospace series - Programme management - Guide to dependability and safety control
Aerospace series - Programme management - Guide to dependability and safety control
The purpose of this document is to provide customers and their suppliers with a document specifying the notions of “construction” and “management” of product dependability and safety (RAMS).
It offers programme directors and project managers information likely to help them:
— determine the tasks to be performed and the application procedures, according to the specific nature of the programme and its goals;
— define and implement the provisions necessary for performing these tasks;
— within programme execution, situate the various tasks involved in constructing and managing the RAMS of a product.
This document applies to all programmes that involve customer/supplier relation.
RAMS management concerns not only all the products covered by these programmes, but also the components of these products and the production and support resources and processes to be implemented.
The provisions of this document can be negotiated at all levels between the parties directly concerned by a given programme. This implies, on the part of the ordering parties, that each lower level is provided with the information needed to perform the tasks and meet the specified targets. This also implies, on the part of suppliers, an escalation of information pertaining to the RAMS results of the products for which they are responsible.
This document is mainly concerned with the technical aspects, aspects of a legislative (in particular safety at work and regulatory conformity) and confidential nature are not dealt with in this document.
Luft- und Raumfahrt - Programm-Management - Richtlinien für die RAMS-Management
Série aérospatiale - Management de programme - Guide pour la maîtrise de la sûreté de fonctionnement
Aeronavtika - Vodenje programov - Vodilo za nadzor zanesljivosti in varnosti
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Aeronavtika - Vodenje programov - Vodilo za nadzor zanesljivosti in varnosti
Aerospace series - Programme management - Guide to dependability and safety control
Luft- und Raumfahrt - Programm-Management - Richtlinien für die RAMS-Management
Série aérospatiale - Management de programme - Guide pour la maîtrise de la sûreté de
fonctionnement
Ta slovenski standard je istoveten z: EN 9227-1:2025
ICS:
03.100.40 Raziskave in razvoj Research and development
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.
EN 9227-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2025
EUROPÄISCHE NORM
ICS 49.140
English Version
Aerospace series - Programme management - Guide to
dependability and safety control
Série aérospatiale - Management de programme - Luft- und Raumfahrt - Programm-Management -
Guide pour la maîtrise de la sûreté de fonctionnement Richtlinien für die RAMS-Management
This European Standard was approved by CEN on 7 April 2025.
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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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.
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. EN 9227-1:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 List of acronyms . 10
5 Fundamental notions and principles . 12
6 Organizational provisions . 13
6.1 RAMS positioning in relation to the programme . 13
6.2 RAMS resources . 14
6.3 Distribution of the responsibilities for RAMS . 15
6.3.1 Responsibilities of the customer . 15
6.3.2 Responsibilities of the users . 15
6.3.3 Responsibility of the suppliers . 16
6.4 Documentation management . 16
7 Construction of RAMS . 16
7.1 General. 16
7.2 RAMS targets . 17
7.2.1 Responsibilities . 17
7.2.2 Principles for defining and expressing targets . 18
7.3 Technical risk control . 19
7.3.1 General. 19
7.3.2 Identification and analysis of technical risks . 20
7.3.3 Criticality assessment . 20
7.3.4 Prioritization of the identified risks . 21
7.3.5 Selection of unacceptable risks . 21
7.3.6 Reduction of unacceptable risks . 22
7.3.7 Management of technical risks . 23
7.4 Execution logic . 23
7.4.1 General. 23
7.4.2 Activities during the feasibility phase . 24
7.4.3 Activities during the definition and development phases . 24
7.4.4 Activities in the production phase . 25
7.4.5 Activities during the operating phase . 25
7.4.6 Activities during the disposal phase . 26
7.5 Growth of RAMS . 26
7.5.1 General. 26
7.5.2 Integrated RAMS growth programmes . 27
7.5.3 Specific RAMS test and growth programmes . 28
7.6 Documentation of the RAMS studies and digital continuity . 29
7.6.1 Documentation of the RAMS studies . 29
7.6.2 Digital continuity . 30
8 RAMS management . 31
8.1 General principles . 31
8.2 Provisions . 32
8.3 RAMS plan. 32
8.4 Relations with quality assurance . 33
8.5 Relations with system engineering . 33
8.6 Relation with the Integrated Logistics Support (ILS) process . 34
8.7 Relations with the human factors analysis process . 34
8.8 Relations with cybersecurity . 34
Annex A (informative) Example of a RAMS plan template . 36
Annex B (informative) Examples of RAMS requirements in programmes . 37
Annex C (informative) Tasks to be performed in the various phases of a programme. 38
Bibliography . 43
European foreword
This document (EN 9227-1:2025) 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 shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by November 2025, and conflicting national standards shall be
withdrawn at the latest by November 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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 the
United Kingdom.
Introduction
The success of a programme depends on optimizing the compromise between the expected technical
and operational performance of the products, the cost of these products and the lead-time to
realize them.
In this context, products dependability and safety control is a key activity which cannot be separated
from other product performance control or programme management.
This document is thus one of the documents supporting EN 9200 concerning the programme
management specification.
1 Scope
The purpose of this document is to provide customers and their suppliers with a document specifying
the notions of “construction” and “management” of product dependability and safety (RAMS).
It offers programme directors and project managers information likely to help them:
— determine the tasks to be performed and the application procedures, according to the specific
nature of the programme and its goals;
— define and implement the provisions necessary for performing these tasks;
— within programme execution, situate the various tasks involved in constructing and managing the
RAMS of a product.
This document applies to all programmes that involve customer/supplier relation.
RAMS management concerns not only all the products covered by these programmes, but also the
components of these products and the production and support resources and processes to be
implemented.
The provisions of this document can be negotiated at all levels between the parties directly concerned
by a given programme. This implies, on the part of the ordering parties, that each lower level is
provided with the information needed to perform the tasks and meet the specified targets. This also
implies, on the part of suppliers, an escalation of information pertaining to the RAMS results of the
products for which they are responsible.
This document is mainly concerned with the technical aspects, aspects of a legislative (in particular
safety at w
...
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