Eric,
Good suggestion, however................... is not the FAA Type Cert dependent upon EC (in this instance) accepting responsibility for the airworthy standard? Certainly that was the case in UK, since a Regulatory Authority is hardly in a position to legally direct maintenance and airworthiness activities on an aircraft for which they have no direct input to the actual design engineering? I am thinking here primarily of the product liability aspect so often exercised within USA
Before EASA, for UK, CAA would assess an aircraft and its National TC; then if it met the standard of BCAR (with possibly the addition of the infamous 'Special Conditions') a UK TC would be granted.I
think the same principal would apply, now, to FAA given the rationalisation of the spat over reciprococity and the validation of the EASA/FAA bi-lateral.
But I may well be wrong, guidance appreciated - VFR