---
title: "CS 23.2140 Trim — CS-23 · Avioverse"
description: "The aeroplane must maintain lateral and directional trim without further force upon, or movement of, the primary flight controls or corresponding trim…"
url: "https://avioverse.aero/regulations/easa/cs-23/subpart-b/cs-23-2140"
---

# CS 23.2140 Trim

Normal-Category Aeroplanes (CS-23) · CS-23 · EAR revision 13 May 2026

IR Implementing rule

## CS 23.2140 Trim

(a) The aeroplane must maintain lateral and directional trim without further force upon, or movement of, the primary flight controls or corresponding trim controls by the pilot, or the flight control system, under the following conditions:

(1) for Level-1, -2, and -3 aeroplanes, in cruise;

(2) for Level-4 aeroplanes, in normal operations.

(b) The aeroplane must maintain longitudinal trim without further force upon, or movement of, the primary flight controls or corresponding trim controls by the pilot, or the flight control system, under the following conditions:

(1) climb,

(2) level flight,

(3) descent,

(4) approach.

(c) Residual control forces must not fatigue or distract the pilot during normal operations of the aeroplane and likely abnormal or emergency operations, including a critical loss of thrust on multi-engine aeroplanes.

IR · CS 23.2140 — CS-23 · ED Decision 2017/013/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC1 23.2140 Trim

ASTM F44 F3264 Standard Specification for Normal Category Aeroplanes Certification

5.9 Trim

F3173/F3173M-21a Standard Specification for Aircraft Handling Characteristics

\[AMC & GM to CS-23: Issue 4]

\[AMC & GM to CS-23: Issue 5]

AMC · AMC1 23.2140 — CS-23 · ED Decision 2026/003/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC2 23.2140 Trim

CS-23 Amdt 4

23.161 Trim

AMC · AMC2 23.2140 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

AMC Acceptable means of compliance

## AMC3 23.2140 Trim

CS VLA Amdt 1

VLA.161 Trim

AMC · AMC3 23.2140 — CS-23 · ED Decision 2017/025/R · CS-23 Easy Access Rules · EAR revision 13 May 2026

[All rules in SUBPART B — FLIGHT](https://avioverse.aero/regulations/easa/cs-23/subpart-b)

Consolidated from the EASA Easy Access Rules (revision 13 May 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.