Or can an a local AI hub that is equiped with 737 spares, suddenly repair an A330? The answer is no!
Sir this is a rather nonsensical scenario you have devised that is self-serving but non-existent in the real world, there is no such thing as a "737 only" AI hub, all their major MRO hubs are by nature multi-platform equipped and this best practice is found the world over in all leading airlines why would the IAF be any different?
That's why an A50 pilot won't be able to operate an A330 unless he got extra training, .
BUT an IAF A330 MRTT pilot would be able to fly the IAF's A330 AWACS fleet and considering the A330 is going to outlive the IL-76/78 of the IAF and by some margin in the IAF's service (IL-76's replacement is already in service and the MoD is soon to place orders for the A330 MRTTs) and the A330 ( as MRTTs and AWACS, potentially even the next Air India One) will vastly outnumber the IL-76/78/A-50 in service then this is all a moot point as far as training and logistics go- the A330 is the logical choice for the AWACS (India) project.
that's why you can't even operate both aircrafts from the same air base, if the base is not equipped for it.
but these A330 AWACS won't be used from the same airbase as the A50 Phalcons, just as the EMB 145Is are meant to be based at other air bases and the air bases won't be equipped to operate all 3 types of AWACS.
Another moot point sir because the IAF will be setting up the requisite infrastructure to operate their A330s across many of their airbases and given the A330's proliferation with domestic airlines and foreign airlines operating in India I would dare say there are FAR more airports/bases in India (and around the world) able to operate/support the A330s than the vintage and rare IL-76/78/A-50.
which is the AWACS fleet of IAF and the operational outcomes of having 3 different types of aircrafts and 3 different radar systems in the same role!
This is so simple sir, the IAF has a requirement for far more AWACS than it currently has in service (3 with 2 more soon to join) however the in-service/soon to be in-service products have their drawbacks:
-EL/W-2090 Phalcon- VERY expensive and in IAF service mated to the A-50 which has low availability (thanks Russia), is more expensive to operate than the A330 ( fewer spares, 4 vs 2 engines, less automated, more maintenance intensive, higher AOG rates etc etc)
-EMB-145 CABS AWACS- limited range/endurance, limited coverage (270" as compared to 360" on the Phalcon/AWACS (India))
The DRDO's AWACS (India) on the A330 MRTT addresses all of the above and is made in India to boot that brings about all the advantages you can imagine when it comes to such sensitive tech. The radar will have the full 360" coverage and mated to the highly fuel efficient, very modern, highly regarded A330 that is in widespread service across the world is win win win (the last win being that it is made in India and apart from this being a plus as far as Op Sec goes I truly believe there will be a large market for the AWACS (India) A330 not only from developing nations but also from developed nations like France and the UK who need to replace their E-3s sooner or later).
What would you offer by way of a solution to the above issues sir? More highly expensive and foreign Phalcons on the troubled A-50 platform?