it's 120 days validity of temp airman cert in FAA world, btw.
Shows you've done your training while ago, haha.
Yes, such regs/practice would be handy in EASA system, at least for those who get highly inconvenienced by Spanish aviation authority adding ratings to existing licence, taking months, etc. But then, how would you pitch it to the bureaucrats in power in EASA? Licence issued by 'common folks' ie examiner? It's not usually CAA staff inspector. Oh noo, power to the people. Those who test and 'sign off' the forms to be sent for issue of licence or rating, should be able to confer temp licence and privileges, a la FAA, but well, still a dream in UK and many other countries.