--- title: "ETSO-2C197 A1 — CS-ETSO · Avioverse" description: "Information Collection and Monitoring Systems 1 Applicability This ETSO provides the requirements which information collection and monitoring systems…" url: "https://avioverse.aero/regulations/easa/cs-etso/subpart-b/etso-2c197" --- # ETSO-2C197 A1 European Technical Standard Orders (CS-ETSO) · CS-ETSO · EAR revision 1 Oct 2026 IR Implementing rule ## ETSO-2C197 A1 Information Collection and Monitoring Systems 1 Applicability This ETSO provides the requirements which information collection and monitoring systems (ICMSs) that record cockpit audio, aircraft data, airborne images, or data link communications and that are designed and 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 The applicable procedures are detailed in CS-ETSO, Subpart A. 2.2 Specific All the documents specified in EUROCAE ED-155, Section 2-1, 2-1.3.4, must be provided. In addition, a statement must be provided that tools are readily available for the retrieval of recorded information from any memory device used within the robust memory module removed from a crash damaged recorder. Note: The documents and tools/special recovery techniques required above are meant to be offered to any safety investigation authority, whether or not the request from that authority is made in the frame of an ongoing investigation. 3 Technical Conditions 3.1 Basic 3.1.1 Minimum Performance Standard The applicable standards are those provided in EUROCAE ED-155, Minimum Operational Performance Specification for Lightweight Flight Recording Systems, dated July 2009. All ICMSs must meet the requirements in ED-155 Chapters 2-1, 2-2, 2-3 and 2-4 of Section 2. All deployable ICMS must also meet the requirements in ED-155 Chapters 3-1, 3-2, 3-3 and 3-4 of Section 3. Additionally, each Type of ICMS must meet the requirements of ED-155 listed in the table below. | ICMS Type | Your design must also meet the following requirements in ED-155 | Your design does not need to meet the following requirements in ED-155 | | --------- | --------------------------------------------------------------- | ---------------------------------------------------------------------- | | I | Part I, Cockpit Audio Recording System | I-2.1.7 and I-6 | | II | Part II, Aircraft Data Recording System | II-2.1.7, II-2.1.9, II-2.1.12, and II-6 | | III | Part III, Airborne Image Recording System | III-2.2 and III-6 | | IV | Part IV, Data-link Recording System | IV-2.1.6, IV-2.1.11, and IV-6 | 3.1.2 Environmental Standard See CS-ETSO, Subpart A,, paragraph 2.1. 3.1.3 Software See CS-ETSO, Subpart A, paragraph 2.2. 3.1.4 Airborne Electronic Hardware See CS-ETSO, Subpart A, paragraph 2.3. 3.2 Specific 3.2.1 Minimum Dimensions for the Memory Module The height (a), width (b), and depth (c) of the crash enclosure must each be 4 cm (1.5 inches) or greater. 3.2.2 Failure Condition Classification See CS-ETSO, Subpart A, paragraph 2.4 A failure of the function defined in paragraph 3.1.1 of this ETSO has been determined to be a minor failure condition. A loss of the function defined in paragraph 3.1.1 of this ETSO has been determined to be a minor failure condition. Note: The failure classification is driven by the use of the recorders in accident investigations. 4 Marking 4.1 General See CS-ETSO, Subpart A, paragraph 1.2. 4.2 Specific None. 5 Availability of Referenced Documents See CS-ETSO, Subpart A, paragraph 3. \[Amdt ETSO/7] \[Amdt ETSO/16] IR · ETSO-2C197 — CS-ETSO · ED Decision 2020/011/R · 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.