SIST EN 3475-306:2006

Overview

EN 3475-306:2005 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 306: Continuity of conductors is a CEN/AECMA standard that defines a simple, mandatory method for verifying the electrical continuity of conductors in aircraft electrical cables. Published and approved in 2005, this part is intended to be used together with EN 3475-100 (General test methods) and forms part of the wider EN 3475 aerospace cable test series.

Key topics and requirements

• Scope: Measurement of continuity of inner and/or outer conductors of electrical cables intended for aircraft use.
• Test method (essential): Continuity shall be measured at a direct current (DC) voltage that does not exceed 9 V.
• Acceptance requirement: The conductor under test must show no discontinuity - i.e., continuity is required for acceptance.
• Normative reference: EN 3475-100 is indispensable and must be applied in conjunction with this part for general test conditions and definitions.
• Regulatory context: Prepared by AECMA-STAN and adopted by CEN; national implementation was required across member bodies.

Practical applications

EN 3475-306:2005 provides a concise, standardized basis for continuity checks across the aerospace supply chain. Typical uses include:

• Quality control during manufacture of aircraft cables to detect breaks or poor internal connections.
• Incoming inspection by procurement or component acceptance teams.
• Periodic or post-repair verification in maintenance, repair and overhaul (MRO) activities.
• Test procedures in laboratory certification and contract test specifications where a common, recognized continuity test is required.
• Documentation for engineering and quality teams to ensure consistent pass/fail criteria.

Who uses this standard

• Aerospace cable manufacturers and suppliers
• Electrical test laboratories and certification bodies
• Aircraft MRO and avionics maintenance teams
• Procurement, inspection, and quality assurance engineers
• Systems integrators and design engineers specifying cable acceptance tests

Related standards

• EN 3475-100 - Aerospace series - Cables, electrical, aircraft use - Test methods - Part 100: General (normative companion document)
• Other parts of the EN 3475 series covering environmental, mechanical and electrical test methods for aircraft cables.

EN 3475-306:2005 is a focused, practical standard that ensures a consistent low-voltage continuity check for aircraft electrical conductors, supporting safety, reliability and traceability across manufacturing and maintenance operations.