It is indeed true that the FAA had a language requirement in place before ICAO's recommendations came in. However my point concerning standardisation remains the same. What test was originally used by the FAA to initially test Language Proficiency? Does that original testing method contain the required content of today's LP requirements? What about new pilots under FAA, how are they tested these days? How similar is the new test to the original test? The fact remains, due entirely to the fact that ICAO made no effort to get involved in test accrediation, that all tests currently being used, whether created by National Aviation Authorities internally or the commercial ones (VAET, AEROSOLUTIONS, RELTA,TEA etc etc) contain very very different content and provide different results. Fact.