---
title: "CS 25.1393 Minimum intensities in any vertical plane of forward and rear position lights — CS-25 · Avioverse"
description: "Each position light intensity must equal or exceed the applicable values in the following table:"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-f/cs-25-1393"
---

# 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

IR Implementing rule

## CS 25.1393 Minimum 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](https://avioverse.aero/regulations/easa/cs-25/subpart-f)

Consolidated from the EASA Easy Access Rules (revision 26 Jan 2023, 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.