IRImplementing rule
ETSO-C5f
DIRECTION INSTRUMENT, NON-MAGNETIC (GYROSCOPICALLY STABILIZED)
1 Applicability
This ETSO provides the requirements which Direction Instruments, Non-Magnetic (Gyroscopically Stabilized) 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 Subpart A.
- 2.2 Specific
None.
3 Technical Conditions
- 3.1 Basic
- 3.1.1 Minimum Performance Standard
Standards set forth in the SAE Aerospace Standard AS8021, 'Direction Instrument, NonMagnetic (Gyroscopically Stabilized)', dated March 16, 1981.
- 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-C5f — CS-ETSO · ED Decision 2016/013/R · CS-ETSO Easy Access Rules · EAR revision 14 Aug 2026