Skip to content

A gradual release of Avioverse begins in October 2026. Request early access →

ETSO-C30d A1

European Technical Standard Orders (CS-ETSO) · CS-ETSO · EAR revision 1 Oct 2026

IRImplementing rule

ETSO-C30dA1

Aircraft Position Lights

1 Applicability

This ETSO provides the requirements which aircraft position lights that are designed and manufactured on or after the date of this ETSO must meet in order to be identified with the applicable ETSO marking.

2 Procedures

2.1 General

Applicable procedures are detailed in CS-ETSO Subpart A.

2.2 Specific

None.

3 Technical Conditions

3.1 Basic

3.1.1 Minimum Performance Standard

Standards set forth in the SAE Aerospace Standard (AS) Document AS8037C ‘Minimum Performance Standard for Aircraft Position Lights’ dated July 2013, as modified by Appendix 1 to this ETSO.

3.1.2 Environmental Standard

See CS-ETSO Subpart A paragraph 2.1.

3.1.3 Software

See CS-ETSO Subpart A paragraph 2.2.

3.1.3 Airborne Electronic Hardware

See CS-ETSO Subpart A paragraph 2.3.

3.2 Specific

3.2.1 Failure Condition Classification

See CS-ETSO Subpart A paragraph 2.4.

4 Marking

4.1 General

In lieu of the marking detailed in CS-ETSO Subpart A paragraph 1.2, the minimum lamp candle power or lamp part number shall be shown.

4.2 Specific

None.

5 Availability of Referenced Document

See CS-ETSO Subpart A paragraph 3.

[Amdt ETSO/13]

[Amdt ETSO/18]

IR · ETSO-C30d — CS-ETSO · CS-ETSO Easy Access Rules · EAR revision 1 Oct 2026

AppendixAppendix

Appendix 1 to ETSO-C30dA1 — AIRCRAFT POSITION LIGHTS

Show the text

In Section 3.2.2 of SAE AS8037C, ‘Minimum Performance Standard for Aircraft Position Lights’, dated July 2013, add below Figure 4 the following new paragraph. The minimum intensity shall not be less than 75 % of its maximum value within the area defined by ‘x’ less than or equal to 10°, as per Figure 4. The minimum intensity shall not be less than 75 % of its maximum value within the area defined by ‘x’ greater than 10° and ‘x’ less than or equal to 20°, as per Figure 4. The minimum intensity shall not be less than 75 % of its maximum value within the area defined by ‘x’ greater than or equal to 110°, as per Figure 4.

[Amdt ETSO/18]

APPENDIX · Appendix 1 to ETSO-C30d — CS-ETSO · CS-ETSO Easy Access Rules · EAR revision 1 Oct 2026

All rules in SUBPART B – LIST OF ETSOs

Consolidated from the EASA Easy Access Rules (revision 1 Oct 2026, extracted 13 Oct 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

Ask Metis about ETSO-C30d →

Metis opens with Avioverse in October 2026 · request early access.