Was that a mistake to put SAR at the top of the list?
No...not to me. Every RCAF aircraft that isn't a primary SAR airframe has SAR as a secondary tasking.
The 140 has sensors, some search stores and a SKAD/Arctic SKAD capability to make it a "SAR platform". SKADs and A/SKADs are carried on the
BRUs 15/a's and released pretty much the same way a torp is.
Just make your Cdn P-8 bombbay config capable of dropping a torp and not much needs to be changed/added to drop a SKAD/Arctic SKAD.
Sea SKAD (always just called SKAD = Survival Kit Air Droppable); consists of two 10-person life rafts, each with an attached package of survival equipment, connected by 900 feet of buoyant rope.
Arctic SKAD; consists of life sustaining equipment to survivors on land or ice. It is packaged in a fibreglass shell, and looks almost exactly like a SKAD, except it has white container assembly. The contents (3 seperate packages, 2 of which hold personnel clothing and equip, 1 of which holds equipment such as tents, stoves, sleeping bags, water and food rations) are orange and deploy under a parachute with strobe lights and sirens - the idea is survivors will run to the packages, not the white fiberglass shell. A single A/SKAD can provide 3 layers protection for 20 people plus the tents, stoves, etc.
A few pics attached of a SKAD being loaded, dropped and deployed, all from UNCLASS material.
My main point? There is nothing mystical and magical about the Aurora that makes it effective as a SAR aircraft. It can do it but it isn't the best Fixed Wing SAR platform; I've done real world overland and maritime SAR with it and it has capabilities...and limitations, some of them significant (ability to illuminate the search track at night being a big one...i.e. no decent search lights). Noboby is coming out the door with kit and training to 'save lives' either.
If I'm out in blue water and sinking and a Cdn SAR is coming, I'm hoping it's a P-8 burning up the fuel with a set of SKADs on board...followed by a Herc and Corm team with the real SAR pro crews coming to do what they do best.