IEC TS 62500:2008

IEC/TS 62500
Edition 1.0 2008-07
TECHNICAL
SPECIFICATION
Process management for avionics – Defining and performing highly accelerated
tests in aerospace systems – Application guide

IEC/TS 62500:2008(E)
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IEC/TS 62500
Edition 1.0 2008-07
TECHNICAL
SPECIFICATION
Process management for avionics – Defining and performing highly accelerated
tests in aerospace systems – Application guide

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
W
ICS 03.100.50; 31.020; 49.060 ISBN 2-8318-9933-8
– 2 – TS 62500 © IEC:2008(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Terms and definitions .7
3 Acronyms .9
4 Highly accelerated test goals and principles .10
4.1 General characteristics.10
4.2 General principles of highly accelerated tests.11
4.3 Example of the limitations of highly accelerated tests .13
5 Industrial technical domains covered by highly accelerated tests.14
6 Highly accelerated tests in the lifecycle and associated assembly levels .14
7 Planning and management of highly accelerated tests.16
7.1 General .16
7.2 Validation and verification .16
7.3 Planning of highly accelerated tests .17
7.4 Management of highly accelerated tests.18
8 General methodology for implementing highly accelerated tests .18
8.1 Structure of the approach .18
8.2 Analysis of product sensitive points.19
8.3 Selection of applicable stresses .20
8.4 Producing a test plan.21
8.5 Performing tests .23
8.6 Analysis of test results, corrective action and resumption of testing.24
9 Building on and using experience .24
9.1 General .24
9.2 Creating the database .25
9.3 Inclusion in the company reference system .25
9.4 Use of results for environmental stress screening.25
9.5 Correlation with feedback .26
9.6 Synthesis and impact on company culture .26
10 Customer/supplier relations .26
10.1 Prime contractor/supplier relations .26
10.1.1 Responsibilities .26
10.1.2 Contract procedures .27
10.1.3 Tests synthesis.27
10.2 Supplier/test laboratory relations .27
11 Costs and savings .28
11.1 General .28
11.2 "Non-reliability" costs .28
11.2.1 Cost in delayed time to market .28
11.2.2 Cost of an in-service failure .29
11.2.3 Cost of a recovery operation.30
11.2.4 Impact on brand image .30
11.3 Expenses generated by the highly accelerated tests.30
11.3.1 Engineering upstream of testing .30

TS 62500 © IEC:2008(E) – 3 –
11.3.2 Test resources used .31
11.3.3 Manpower dedicated to highly accelerated tests .31
11.3.4 The cost of damaged or destroyed products .31
Annex A (informative) Comparative characteristics of highly accelerated tests and
reliability tests .32
Annex B (informative) Example of potential effectiveness table for stresses or loadings
according to the nature of the product sensitive point .33
Annex C (normative) Highly accelerated tests implementation logic .34
Annex D (informative) Margin-related statistical considerations – Example:
telecommunications circuit boards or board assembly.36
Bibliography.38

Figure 1 – Exploration of margins using a highly accelerated test .13
Figure 2 – Financial losses generated by a delay in time to market.29
Figure C.1 – General logical flowchart .34
Figure C.2 – Details of test performance.35
Figure D.1 – Examples of the margin options open to the designer .37

Table A.1 – Comparative characteristics of highly accelerated tests and reliability
tests .32
Table B.1 – Example of potential effectiveness table for stresses or loadings according
to the nature of the product sensitive point .33

– 4 – TS 62500 © IEC:2008(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROCESS MANAGEMENT FOR AVIONICS –
DEFINING AND PERFORMING HIGHLY
ACCELERATED TESTS IN AEROSPACE SYSTEMS –
APPLICATION GUIDE
FOREWORD
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IEC 62500, which is a technical specification, has been prepared by IEC technical committee
107: Process management for avionics.

TS 62500 © IEC:2008(E) – 5 –
This technical specification cancels and replaces IEC/PAS 62500 published in 2006. This first
edition constitutes a technical revision.
The text of this technical
...