ED Decision 2016/013/R
1 Applicability
This ETSO provides the requirements which Crew Member Oxygen Regulator, Demand 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 SAE AS8027, Crew Member Oxygen Regulator, Demand, dated 1 June2004, as modified by Appendix 1 to this ETSO.
Crew member oxygen regulators are separated into four types:
Type I: Remote-mounted, panel or portable,
Type II: Man-mounted, not mask-mounted,
Type III: Mask-mounted, less valving, and
Type IV: Mask-mounted, with integral valving.
The four types of oxygen regulators are further separated into five classes:
Class A: Straight demand,
Class B: Diluter demand,
Class C: Straight demand, pressure breathing,
Class D: Diluter demand, pressure breathing to 40 000 ft, and
Class E: Diluter demand, pressure breathing to 45 000 ft.
3.1.2 Environmental Standard
Refer to SAE AS8027, paragraph 4.5
3.1.3 Computer Software
None.
3.1.4 Electronic Hardware Qualification
None.
3.2 Specific
None.
3.2.1 Failure Condition Classification
See CS-ETSO, Subpart A, paragraph 2.4.
4 Marking
4.1 General
Marking is detailed in CS-ETSO, Subpart A, paragraph 1.2.
4.2 Specific
Type and class (refer to paragraph 3),
Maximum altitude (per AS8027, paragraph 1.2.3),
Inlet supply pressure range (per AS8027, paragraph 3.1.7).
5 Availability of Referenced Document
See CS-ETSO, Subpart A, paragraph 3.
[Amdt ETSO/11]
ETSO-C89a sets requirements for demand crew member oxygen regulators, referencing SAE AS8027, defining four types and five classes, and specifying marking for type, class, maximum altitude, and inlet supply pressure.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
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