---
title: "ETSO-2C502a — CS-ETSO · Avioverse"
description: "ROTORCRAFT INTEGRATED IMMERSION SUITS 1 Applicability This ETSO gives the requirements which integrated immersion suits for use on rotorcraft that are…"
url: "https://avioverse.aero/regulations/easa/cs-etso/subpart-b/etso-2c502a"
---

# ETSO-2C502a

European Technical Standard Orders (CS-ETSO) · CS-ETSO · EAR revision 1 Oct 2026

IR Implementing rule

## ETSO-2C502a

ROTORCRAFT INTEGRATED IMMERSION SUITS

1 Applicability

This ETSO gives the requirements which integrated immersion suits for use on rotorcraft that are manufactured on or after the date of this ETSO must meet in order to be identified with the applicable ETSO marking.

2 Procedures

2.1 General

Applicable procedures are detailed in CS-ETSO Subpart A.

2.2 Specific

None.

3 Technical Conditions

3.1 Basic

3.1.1 Minimum Performance Standard

The applicable standards are those provided in ASD-STAN document prEN4863, edition P1, dated May 2022.

3.1.2 Environmental Standard

None.

3.2 Specific

None.

4 Marking

4.1 General

Marking is detailed in CS-ETSO Subpart A paragraph 1.2.

4.2 Specific

The specific marking requirements are detailed in ASD-STAN document prEN4863, edition P1, dated May 2022.

5 Availability of Referenced Document

See CS-ETSO Subpart A paragraph 3.

\[Amdt ETSO/1]

\[Amdt ETSO/18]

IR · ETSO-2C502a — CS-ETSO · CS-ETSO Easy Access Rules · EAR revision 1 Oct 2026

[All rules in SUBPART B – LIST OF ETSOs](https://avioverse.aero/regulations/easa/cs-etso/subpart-b)

Consolidated from the EASA Easy Access Rules (revision 1 Oct 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.