I'm starting an A320 type rating in a couple of months, but my MEP/IR is expiring before that. The pre-entry requirements were only a ME IR. Got me wondering: can I just revalidate my ME IR and let my MEP expire? In other words: is there such a thing as a standalone ME IR (meaning no class or type rating that goes with it)? Thanks and happy landings!
This was just published in CAP1855 from the CAA a few days ago, which may answer your question:
Instrument Rating validity, revalidation and renewal for aeroplanes and helicopters
To revalidate, you must hold a valid relevant class or type rating, unless the IR revalidation is combined with the renewal of the relevant class or type rating; no “empty” IR to be endorsed
The UK CAA has deferred this requirement until 10 January 2020 as stated in ORS4 N.1329.
References: Subpart G, FCL.625, FCL.625(A), FCL.625(H))
I'll answer this from a USA perspective.
If you hold a multi-engine rating and/or an instrument rating, they DO NOT expire. Currency determines if they are useable.
If you are getting a new rating (type rating) when that is issued it revalidates the ME and the Instrument rating. You are then current with both and the new type rating. The ME and Instrument ratings are NOT airplane specific, unless a type rating is required for the airplane.
Roger G, ATP (with many type ratings) CFII A&P IA AD.