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ETSO-C101

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

IRImplementing rule

ETSO-C101

1 Applicability

This ETSO gives the requirements which overspeed warning instruments, 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

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 Society of Automotive Engineers, Inc., (SAE) Aerospace Standard (AS) 8007 'Overspeed Warning Instruments' dated February 1978.

- 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 1.2.

- 4.2 Specific

None.

- 5 Availability of Referenced Document

See CS-ETSO Subpart A paragraph 3.

OVERSPEED WARNING INSTRUMENTS

ED Decision 2003/10/RM

IR · ETSO-C101 — CS-ETSO · 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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