Can't find any ref to age limits.
Here's what "SPO" means:
SPO.GEN.101 Scope
- (a) This Part establishes the requirements to be met by an operator when operating an aircraft with crew members and task specialists in specialised operations.
- (b) Specialised operations include, but are not limited to, the following activities: helicopter external loads operations, helicopter survey operations, human external cargo operations, parachute operations, agricultural flights, aerial photography operations, aerial mapping operations, glider towing, aerial advertising, calibration flights, oil spill work, stringing power line operations, pollution control activity, survey operations, news media flights, flying displays, aerial entertainment, competition flights, clearing saw operations, animal herding and rescue, maritime funeral operations, veterinary vaccine dropping flights, scientific research flights, avalanche mining operations, construction work flights, television and movie flights.
But they also allow themselves leeway to add other types of flight to the list. SPO will encapsulate all the above, whether private or paid.
None of this is yet in force.