---
title: "CS 25.29 Empty weight and corresponding centre of gravity — CS-25 · Avioverse"
description: "The empty weight and corresponding centre of gravity must be determined by weighing the aeroplane with – (1) Fixed ballast;"
url: "https://avioverse.aero/regulations/easa/cs-25/subpart-b/cs-25-29"
---

# CS 25.29 Empty weight and corresponding centre of gravity

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

IR Implementing rule

## CS 25.29 Empty weight and corresponding centre of gravity

(a) The empty weight and corresponding centre of gravity must be determined by weighing the aeroplane with –

(1) Fixed ballast;

(2) Unusable fuel determined under CS 25.959; and

(3) Full operating fluids, including –

(i) Oil;

(ii) Hydraulic fluid; and

(iii) Other fluids required for normal operation of aeroplane systems, except potable water, lavatory pre-charge water, and fluids intended for injection in the engine.

(b) The condition of the aeroplane at the time of determining empty weight must be one that is well defined and can be easily repeated.

IR · CS 25.29 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023

[All rules in SUBPART B – FLIGHT](https://avioverse.aero/regulations/easa/cs-25/subpart-b)

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.