TDI CCR Helitrox Decompression Procedures Instructor

TDI CCR Helitrox Decompression Procedures Instructor

This is the instructor level certification course for instructors wishing to teach the unit specific closed circuit rebreather helitrox diluent decompression procedures course. The objective of this course is to train instructors to teach recreational rebreather diving, and to develop basic rebreather diving skills appropriate to diving within the normal recreational depth limits for decompression diving to 45 metres / 150 feet using oxygen (O2) and helitrox (minimum 20% oxygen, maximum 35% helium) as diluent.

TDI CCR Helitrox Decompression instructor

Rebreather Helitrox Decompression Procedures Instructor Course prerequisites:

  • Minimum age 21
  • Certified TDI Unit Specific Rebreather Diver, or equivalent
  • Certified TDI Advanced Nitrox Instructor, or equivalent
  • Certified TDI Decompression Procedures Instructor or Helitrox Deco Procedures Instructor, or equivalent
  • Provide proof of 250 verified logged dives, 100 being on nitrox
  • Provide proof of a minimum of 100 logged dives and a minimum of 100 hours on the specific unit
  • Be a certified rebreather diver (not unit specific) for a minimum of 12 months
  • If the rebreather is a TDI approved sidemount rebreather, the student must hold the TDI Sidemount Instructor certification or equivalent.
  • Be a current TDI Air Diluent CCR Instructor (unit specific) and TDI Open Circuit
    Helitrox Decompression Procedures Instructor (or equivalent)

Upon successful completion of this course, graduates may teach the TDI Closed Circuit Rebreather Helitrox Diluent Decompression Procedures course not to exceed the manufacturers designed depth maximum of 45 metres / 150 feet with helitrox diluent.

Course Structure and Duration:

Open Water Execution

  • Four dives

Course Structure

  • TDI allows instructor trainers to structure courses according to the number of
    students participating and their skill level


  • The minimum number of classroom and briefing hours is 6

What you can expect to learn:

  • History and evolution of rebreathers
  • Gas Physiology
  • Emergency procedures
  • Properly execute the planned dive within all pre-determined limits