The C130 will not be holding SAR standby, it's only taking on the role for the Falklands, so I guess the bit of sea between 30 West & 200 miles off the coast (ie: quite alot) will be a literal & metaphorical 'capability gap' until the MRA4 arrives.
Unless anyone else can think of any other suitable platform?
...Ok i'll bite...if the C130 can take on the role in the falklands, why can't the other ones not down south carry out the task untill the MR4A is cleared?
(taking cover)
S