I am a test pilot, or even Test Pilot, which I commonly abbreviate in written and spoken English to "TP".
There is an entitlement that graduates of ETPS can use "tp" as a postnominal. I am not a graduate of ETPS, therefore I am not Genghis Engineer tp. I am however Genghis Engineer MSETP, as I met the stringent membership requirements of that august body.
Not sure how we got to grammar and postnominals. Anyhow the lady you're discussing says in this article that she studied at ETPS, although doesn't say which course.
Female pilots: Meet the young woman who tests the world's biggest planes for a living - Telegraph
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