---
title: "CS 25.815 Width of aisle — CS-25 · Avioverse"
description: "(See AMC 25.815) The passenger aisle width at any point between seats must equal or exceed the values in the following table:"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-d/cs-25-815"
---

# CS 25.815 Width of aisle

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

IR Implementing rule

## CS 25.815 Width of aisle

(See AMC 25.815)

The passenger aisle width at any point between seats must equal or exceed the values in the following table:

| Passenger seating capacity | Minimum passenger aisle width (cm (inches)) |                                       |
| -------------------------- | ------------------------------------------- | ------------------------------------- |
|                            | Less than 64 cm (25 inches) from floor      | 64 cm (25 inches) and more from floor |
| 10 or less                 | 30 (12)\*                                   | 38 (15)                               |
| 11 to 19                   | 30 (12)                                     | 51 (20)                               |
| 20 or more                 | 38 (15)                                     | 51 (20)                               |

\* A narrower width not less than 23 cm (9 inches) may be approved when substantiated by tests found necessary by the Agency.

IR · CS 25.815 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

AMC Acceptable means of compliance

## AMC 25.815 Width of aisle

The relevant parts of FAA Advisory Circular (AC) 25-17A Change 1, Transport Airplane Cabin Interiors Crashworthiness Handbook, dated 24.5.2016, are accepted by the Agency as providing acceptable means of compliance with CS 25.815.

Note: ‘The relevant parts’ means ‘the parts of AC 25-17A Change 1 that address the applicable FAR/CS-25 paragraph’.

\[Amdt 25/11]

\[Amdt 25/26]

AMC · AMC 25.815 — CS-25 · ED Decision 2020/024/R · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART D – DESIGN AND CONSTRUCTION](https://avioverse.aero/regulations/easa/cs-25/subpart-d)

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.