IRImplementing rule
ETSO-C88b
AUTOMATIC PRESSURE ALTITUDE REPORTING CODE GENERATING EQUIPMENT
1 Applicability
This ETSO provides the requirements which Automatic Pressure Altitude Reporting CodeGenerating Equipment 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
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 Society of Automotive Engineers, Inc., (SAE) Aerospace Standard AS8003, Automatic Pressure Altitude Reporting Code Generating Equipment, dated July 1974.
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
None.
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 resulting in misleading information is a major failure condition. Failure of the function defined in paragraph 3.1.1 of this ETSO resulting in loss of information is 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/11]
IR · ETSO-C88b — CS-ETSO · ED Decision 2016/013/R · CS-ETSO Easy Access Rules · EAR revision 14 Aug 2026