Could the Courageous class have become aircraft repair ships?

Could surviving Courageous-class carriers have been converted into aircraft repair ships?

Probably. They were larger and better suited than Furious, although their condition would determine whether conversion remained worthwhile.

Surviving Courageous-class carriers could plausibly have been repurposed for aircraft repair because they were larger than Furious and had better machinery and a more suitable design. Their age and wartime wear would still affect whether conversion was economical. An existing flight-deck hull could be reused when the support requirement mattered more than front-line carrier performance. The answer remains conditional on the ships surviving and retaining enough useful life.