The answer for this can be found in section one of the Rescue Diver Course in the PADI Instructor Manual.
There was a printing error on the corresponding Instructor Slates which was corrected in a Training Bulletin last year. It stated the max depth was 6 metres but is incorrect.
Always default to the most recent version of the PADI Instructor Manual and follow any updates throughout the year via the Training Bulletins. Here it states the correct max depth for Rescue Exercise 4.
Maria and Carlos sign up for their IDC. The Course Director, Mika completes the orientation with the pair and then leaves Master Instructor François to complete the rest of the program.
Maria asks about the standards of teaching the program this way and François informs her that he is allowed to complete the balance of the program Under The Direction Of Mika.
Later in the program Carlos has a question that François is unable to answer and says he refer to Mika when he available.
When Carlos asks where Mika is he is informed that Mika has taken a short break away from their location and will be back after the Instructor Exams are complete to begin Specialty Instructor seminars.
Is François correct in using the Supervision rating Under The Direction Of while teaching Maria and Carlos’ IDC?
François is correct in the respect that an Instructor Development Course Staff Instructor may conduct the program Under The Direction Of the Course Director. Mika has to personally conduct the Orientation section of the program also, which he did.
The problem lies with their interpretation of Under The Direction Of level of Supervision during the IDC. Mika must be present for consultation somewhere on the premises. If he has taken a break away from the location this cannot be the case.
Most peoples arm span is equal to their height and if a calibrated measuring device isn't present and used for small areas rather than the mapping of an entire dive site, arm spans are far more accurate than kick cycles.
Sally, a 12-year-old Junior Open Water Diver has just completed her PADI Underwater Navigator specialty program. She wishes to complete the PADI Search & Recovery Diver specialty course as her next course and her older sibling, James wishes to join too - Sean is a 15-year-old Open Water Diver who is already certified as a PADI Adventure Diver with Underwater Navigator, Search & Recovery and Night Adventure Dives – May both James and Sally join the Search & Recovery specialty course at this time?
Sally may join the PADI Search and Recovery Specialty has she has met the prerequisite requirements. Check out Key Standards of the PADI Instructor Manual and the special considerations listed under the table to confirm this.
James, however, will need to either upgrade his Underwater Navigator by completing the balance of that program to become an Underwater navigator like his sister or take two more Adventure Dives including Deep Diver and certify as a PADI Advanced Open Water Diver before he can join the Search and Recovery Specialty.
A Pilot Valve in a Scuba Regulator is a small valve that controls the opening of a larger valve in the second stage.