Skip to content

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

CS 25.1393 Minimum intensities in any vertical plane of forward and rear position lights

Large Aeroplanes (CS-25) · CS-25 · EAR revision 26 Jan 2023

IRImplementing rule

CS 25.1393Minimum intensities in any vertical plane of forward and rear position lights

Each position light intensity must equal or exceed the applicable values in the following table:

Angle above or below the horizontal plane:Intensity
0°1·00 I
0° to 5°0·90 I
5° to 10°0·80 I
10° to 15°0·70 I
15° to 20°0·50 I
20° to 30°0·30 I
30° to 40°0·10 I
40° to 90°0·05 I

IR · CS 25.1393 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

All rules in SUBPART F – EQUIPMENT

Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, extracted 17 Aug 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 CS 25.1393 →

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