Government procurement · Aviation Breathing Systems

How to Specify a CA-EBS for Military Aviation

A practical guide for contracting officers, program offices, ALSE shops, and law-enforcement aviation units writing compressed-air emergency breathing requirements.

Request a Quote Aviation Breathing Systems CA-EBS terminology

Who this guide is for

Contracting officers, program offices, ALSE shops, and law-enforcement aviation units writing or evaluating emergency breathing system (EBS) / compressed-air emergency breathing system (CA-EBS) requirements for rotary-wing and maritime aviation underwater-egress risk.

For example, USCG ALC RFQ 70Z03826QE0000057 used brand name or equal, complete EBS assemblies, and salient characteristics framing for an aviation emergency breathing system requirement, with related support language for factory-certified / OEM-authorized maintenance pathways (also mirrored on FBO Daily). Broader ALSE sustainment work statements sometimes reference Aircraft Maintenance and Aviation Life Support Equipment (ALSE) Maintenance and Support. Always verify the active solicitation text rather than copying a prior package wholesale.

This guide helps translate operational need into performance-based salient characteristics. It is an educational procurement aid, not a controlled procedure and not a substitute for program-office technical authority.

Start with the mission, not the brand

Before naming a manufacturer, define:

  1. Mission / underwater egress use — aircraft ditching risk, over-water flight, passenger vs aircrew, maritime aviation environment.
  2. User population — aircrew, passengers, mixed; training posture; operational posture.
  3. Interface reality — survival vest / harness / restraint compatibility; left/right mouthpiece preference; hose routing; accessibility to handwheel and purge valve.
  4. Sustainment model — organic ALSE shop vs contractor logistics; overhaul interval expectations; fill capability.

Then identify an appropriate CA-EBS system or approved equivalent using manufacturer part numbers, verified NSNs (when available from OEM or government catalog sources), and configuration codes.

System class: CA-EBS vs oxygen

  • Specify compressed-air emergency breathing for underwater egress (CA-EBS / compressed-air egress breathing).
  • Survival Egress Air (SEA) is an OEM product-family name for certain compressed-air egress systems (for example, Aqualung SEA configurations). Use SEA when you mean that product family—not as a generic synonym for every CA-EBS.
  • Do not conflate CA-EBS with supplemental aviation oxygen systems (for example, man-mounted helicopter oxygen). Those are a different product class with different hazards, fill media, and approval pathways.
  • Buyers may also see OEM or standards framing such as Category A CA-EBS. Treat that as a configuration/standards reference to confirm against the cited OEM documentation—not as a substitute for writing measurable form/fit/function criteria.

Core salient characteristics checklist

1. Service pressure

  • Common configurations include ~3000 psi and ~4500 psi / 300 bar classes.
  • Require the offeror to state rated pressure, cylinder marking/approval status (DOT/TC or other applicable), and any composite overwrap (COPV) details when applicable.
  • Treat 3000 vs 4500 as a capability/configuration choice—not a generic “premium” claim. (A dedicated comparison page can expand this later.)

2. Cylinder capacity and material

  • Require published water volume / air volume (e.g., in³ or ft³) for the offered configuration.
  • Material: aluminum, COPV, or other—state which is acceptable.
  • Burst-disc / overpressure protection requirements as applicable.

3. System length, mass, and stowage

  • Fully charged weight (system as worn/stowed).
  • Envelope / length constraints for vest or cabin stowage.
  • Always-on vs controlled activation philosophy if operationally relevant.

4. Hose configurations

  • Common published hose lengths include 20" and 27" (and related OEM options). Specify allowed lengths or “as required for platform/vest.”
  • Hose type (for example, flexi lightweight braided) if required by the program.

5. First-stage / regulator configuration

  • Marine-grade or lightweight first-stage body as required.
  • Handwheel versus always-on configuration.
  • Swivel / porting needs.
  • Fill-port interface for authorized refill equipment.

6. Second-stage / mouthpiece / purge protection

  • Second-stage style; purge cover / protection.
  • Mouthpiece adjustability and left/right neutrality if required.
  • Nose-clip availability if required by the program.

7. Indicators and user cues (preflight)

  • Remaining-air indication (e.g., dial / pin) as a preflight / readiness check, not as an assumed low-air warning during underwater egress.
  • On/off visual indication where applicable.
  • Do not write requirements that treat the gauge as a scuba-style continuous low-air cue during escape unless the OEM documentation explicitly supports that use.

8. Vest / interface compatibility

  • Mounting to specified survival vest / harness family.
  • Retention, QD, and routing requirements.
  • Human-factors fit confirmation at unit issue.

9. Environment

  • State operating environment assumptions (maritime egress, temperature range, etc.).
  • Avoid inventing depth or endurance ratings—require OEM-published limits only.

10. Traceability and quality

  • Certificate of Conformance / OEM traceability expectations.
  • Quality-management expectations for the supplier pathway (for example, AS9100 / ISO 9001 registration of the performing organization, where required by the solicitation).
  • Serialization / lot control as required.

11. Maintenance, overhaul, and lifecycle

  • Require an OEM-authorized or factory-certified inspection, maintenance, and overhaul pathway—which may be the OEM factory and/or approved service centers as documented by the OEM. Avoid accidental sole-depot language unless a single location is an explicit, justified program requirement.
  • Cylinder requalification through approved channels (do not require in-house hydrostatic testing unless that capability is explicitly within the awarded scope).
  • Repair kits / spare second stages / service parts availability.

12. Fill equipment and GSE

  • Compatibility with portable fill stations, air compressors, and refill stations when the procurement bundles EBS hardware with fill/GSE or repair toolkits.
  • Breathing-air quality requirements for refill.

13. Training

  • Operator familiarization and ALSE maintainer training expectations.
  • SWET / dunker / egress training coordination language where appropriate.

14. Delivery and fleet support

  • Delivery schedule, configuration control, and spare-pool strategy.
  • Point of contact for technical clarification during performance.

“Brand name or equal” drafting tips

When using brand-name-or-equal language:

  • List salient characteristics that define form, fit, and function.
  • Avoid copying marketing adjectives (“best,” “lightest”) without measurable criteria.
  • Allow equals that meet the published performance and interface requirements.
  • Require documentation that demonstrates equivalence (drawings, datasheets, CoC, prior use).
  • Sole-source stacking guardrail: do not pile so many brand-unique features into “salient characteristics” that brand-name-or-equal becomes a de facto sole-source. Prefer measurable performance, interface, and sustainment criteria that a true equal can meet.

What to attach to the solicitation package

A clearer package reduces Q&A churn. Consider requiring offerors to provide:

  1. Current OEM datasheet for the exact configuration offered
  2. Configuration / part-number crosswalk (hose length, cylinder size, left/right, handwheel vs always-on, etc.)
  3. Sample Certificate of Conformance / traceability language
  4. Maintenance and overhaul pathway description (OEM-authorized factory and/or approved service centers, as required)
  5. Fill/GSE compatibility statement when refill equipment is in scope
  6. Training outline (operator and/or maintainer)
  7. Delivery schedule and spare/repair-kit options

Related reading and ESP technical resources

Educational / category pages:

Example configuration pages (illustrative of how ESP presents specific products—not an exclusive list of acceptable equals under brand-name-or-equal):

Lifecycle Support and Government Procurement Support capability pages are planned; until live, use Request a Quote.

How ESP can help

ESP can assist contracting officers, program offices, ALSE shops, and law-enforcement aviation units in translating operational requirements into configuration-specific CA-EBS, sustainment, and support requirements—including compressed-air egress configuration pathways, fill/GSE alignment, and lifecycle support planning.

Contact: Request a Quote · sales@esp-llc.net · (336) 642-2573

Educational procurement guide for public website use. Not a controlled procedure or substitute for program-office technical authority.