ANZEIGE
Das scheint nicht so dogmatisch zu sein. Sean Mendis schreibt hier https://www.flyertalk.com/forum/22942008-post3.html
"There are a number of factors that go into controlled duplicate assignment, including geographical separation, type of operation (cargo/passenger, scheduled/charter, etc...) but in the end, basic common sense usually prevails. I've successfully petitioned IATA for a controlled duplicate alpha-alpha code assignment as recently as 2012 and it was a straightforward process if you have the proper arguments to make."
"There are a number of factors that go into controlled duplicate assignment, including geographical separation, type of operation (cargo/passenger, scheduled/charter, etc...) but in the end, basic common sense usually prevails. I've successfully petitioned IATA for a controlled duplicate alpha-alpha code assignment as recently as 2012 and it was a straightforward process if you have the proper arguments to make."