Independent course guide · References checked 30 September 2026. Confirm current standards and your eligibility with an authorised instructor.
Where this course fits
Appropriate recreational/nitrox certification and experience are required; unit and current standard requirements apply.
Confirm the exact unit, rental or ownership arrangements, consumables, bailout equipment and post-course practice support.
TDI Air Diluent CCR Diver: learning scope
Entry & preparation
Appropriate recreational/nitrox certification and experience are required; unit and current standard requirements apply.
What you study
Learn closed-circuit rebreather use on a specific approved unit within the course’s no-stop scope.
- Unit assembly and checks
- Oxygen monitoring and loop management
- Bailout skills and practical assessment
Qualification boundary
This initial CCR course is not Air Diluent Decompression CCR. Unit-specific qualification does not transfer automatically to another model.
A visual summary of this independent course guide. Confirm current prerequisites and standards with the agency and instructor.
What the training focuses on
| Learning area | Discuss before booking |
|---|---|
| Unit assembly and checks | How will this be taught and assessed? |
| Oxygen monitoring and loop management | What preparation and equipment should I bring? |
| Bailout skills and practical assessment | What happens if I need more practice? |
Understand the qualification’s scope
This initial CCR course is not Air Diluent Decompression CCR. Unit-specific qualification does not transfer automatically to another model.
Frequently asked questions
Can I use any rebreather after certification?
No. Required crossover or unit-specific training applies.
Does it include planned decompression?
This course is distinct from the decompression CCR qualification. Verify the exact certification name.
Does my open-circuit gas planning transfer unchanged?
No. CCR monitoring and bailout planning require their own training.
What should an Australian course quote include?
Ask for an itemised total covering learning materials, practical sessions, certification, equipment, boat or site fees and any extra training. Availability, duration and prices are centre-specific.
Where do I confirm the latest prerequisites?
Use the official TDI information linked below and ask the authorised instructor to check your certification, age, experience, medical and first-aid records. A similar course name from another agency is not automatic equivalence.
Official course information
TDI: Air Diluent CCR Diver ↗Agency standards determine certification requirements. This guide does not reproduce the full standard or imply agency endorsement.