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ETSO-2C128

European Technical Standard Orders (CS-ETSO) · CS-ETSO · EAR revision 14 Aug 2026

IRImplementing rule

ETSO-2C128

DEVICES THAT PREVENT BLOCKED CHANNELS USED IN TWO-WAY RADIO COMMUNICATIONS DUE TO UNINTENTIONAL TRANSMISSIONS

1 Applicability

This ETSO gives the requirements which devices that prevent blocked channels used in two-way radio communications due to unintentional transmissions, 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

Standards set forth in the EUROCAE document ED67, 'MOPS for Devices that prevent Unintentional or Continuous Transmissions', dated April 1991.

- 3.1.2 Environmental Standard

See CS-ETSO Subpart A paragraph 2.1

- 3.1.3 Computer Software

See CS-ETSO Subpart A paragraph 2.2

- 3.2 Specific

None

4 Marking

- 4.1 General

Marking is detailed in CS-ETSO Subpart A paragraph .

- 4.2 Specific

None.

5 Availability of Referenced Document

See CS-ETSO Subpart A paragraph 3.

IR · ETSO-2C128 — CS-ETSO · ED Decision 2003/10/RM · CS-ETSO Easy Access Rules · EAR revision 14 Aug 2026

All rules in SUBPART B -LIST OF ETSOS

Consolidated from the EASA Easy Access Rules (revision 14 Aug 2026, extracted 17 Aug 2026) for convenience. Not the official publication — verify against the Official Journal of the European Union and the EASA publications before operational use.

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