IRImplementing rule
ETSO-C158
AERONAUTICAL MOBILE HIGH FREQUENCY DATA LINK (HFDL) EQUIPMENT
1 Applicability
This ETSO gives the requirements which Aeronautical Mobile High Frequency Data Link (HFDL) Equipment 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 Radio Technical Commission for Aeronautics (RTCA) Document DO-265, Minimum Operational Performance Standards for Aeronautical Mobile High Frequency Data Link (HFDL)', dated 14/12/2000.
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.
- 3.1.4 Electronic Hardware Qualification
See CS-ETSO Subpart A paragraph 2.3.
3.2 Specific
- 3.2.1 Failure Condition Classification
See CS-ETSO Subpart A paragraph 2.4.
Failure of the function defined in paragraph 3.1.1 of this ETSO has been determined to be a minor failure condition.
4 Marking
- 4.1 General
Marking as 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. [Amdt ETSO/7]
IR · ETSO-C158 — CS-ETSO · ED Decision 2012/009/R · CS-ETSO Easy Access Rules · EAR revision 14 Aug 2026