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Appendix 1 to ETSO-C78a - MPS for Crewmember Demand Oxygen Masks

Available versions for ERULES-1963177438-9286

ED Decision 2018/002/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

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###### Appendix 1 to ETSO-C78a – MPS for Crewmember Demand Oxygen Masks

*ED
Decision
2018/002/R*

This Appendix prescribes the MPS for crewmember demand oxygen masks.
The applicable standard is SAE AS8026A, Crewmember Demand Oxygen Mask
for Transport Category Aircraft, dated October 2001. It is modified
as follows.

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SAE
			AS8026A: 

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Modification:
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Section
			1, SCOPE 

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To
			be disregarded.
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Paragraph
			3.1.1
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To
			be revised: ‘General: Materials of a type, grade and quality
			that experience and/or tests have shown suitable for the purpose
			shall be used. Materials that contaminate oxygen or are adversely
			affected by continuous service with oxygen shall not be used. The
			following test methods shall be used to verify compliance with
			material requirements established in a design specification.’
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Paragraph
			3.1.1
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a.
			Resistance to Flammability
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To
			be revised: ‘Except for small parts like knobs, triggers,
			fasteners, seals, and electrical parts that don’t contribute
			significantly to fire propagation, materials including packaging
			shall comply with CS 25.853(a) and Appendix F, Part I(a)(1)(iv)’
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Paragraph
			3.1.3
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To
			be revised: ‘Cleaning and Sterilizing: The oxygen mask shall be
			made of materials that permit cleaning and sterilising without
			adverse effects, and without major disassembly. The cleaning
			method shall be either manufacturer recommended, or according to
			SAE ARP1176, Oxygen System Component Cleaning and Packaging.
			Cleaning and sterilising procedures shall be included in the
			Component Maintenance Manual (CMM).’
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Paragraph
			3.1.4
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To
			be revised: ‘Elastomeric Components: A tag or leaflet describing
			service life limits of elastomeric components and a suggested
			method to inspect for deterioration in these components shall be
			attached to the mask. If not attached, the tag shall be included
			with the packaged mask as delivered to the user. Silicone rubber
			parts, having unlimited shelf life, are exempt from this
			requirement. Life limits and inspection procedures shall be
			included in the CMM.’
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Paragraph
			3.3
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To
			be disregarded. Marking is specified in paragraph 4 of this ETSO.
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Paragraph
			3.5
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To
			be revised: ‘The oxygen mask face-piece of Type I and Type II
			masks shall be stored in a container, mounted (panel or sidewall)
			or attached to a suspension device. The mask assembly must be
			donned using only one hand and operating in 5 seconds or less,
			without disturbing eyeglasses. After donning, the mask must not
			prevent immediate communication between crewmembers of the
			airplane intercommunications system.’
Type
			III and Type IV oxygen masks may be similarly installed, and may
			be designed to require use of two hands and/or take more than 5
			seconds to don.
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Paragraph
			3.12
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To
			be revised: ‘Oxygen mask design shall permit the installation of
			a microphone and connecting communications cable. When microphones
			are furnished with the masks, these must conform to the current
			revision of ETSO-C139.’
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Paragraph
			5.1.4
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To
			be disregarded.
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Paragraph
			5.1.5
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To
			be disregarded.
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[Amdt ETSO/3]

[Amdt ETSO/13]