[powercf]

Outputting that in lower case could be a small step to making them easier to parse, and therefore more likely to be read. I find the text you posted tiring even to look at.

THE REF (B) TURKISH NOTAM A3009/16 LTAAYNYX (111139 EUECYIYN JUL 2016) HAS NO GROUND, CANNOT PRODUCE ANY INTERNATIONALLY LEGAL EFFECT WITHIN ATHINAI FIR/ HELLAS UIR AND IS CONSIDERED NULL AND VOID.

vs

The ref (B) Turkish NOTAM A3009/16 LTAAYNYX (111139 Euecyiyn Jul 2016) has no ground, cannot produce any internationally legal effect within Athinai FIR/Hellas UIR and is considered null and void.

[DocTomoe]

Yeah, good luck with changing hundreds of established, life-or-death-systems, most of them actually embedded in planes in the airline industry worldwide, at the same cutover date, to suddenly support mixed-case script.

Have a one-hour watch to understand what kind of beast you are wrestling here: https://media.ccc.de/v/31c3_-_6308_-_en_-_saal_1_-_201412281...

[michaelt]

  good luck with changing hundreds of established, 
  life-or-death-systems, most of them actually
  embedded in planes

Seems to me that's precisely the sort of thing the NTSB _is_ supposed to be able to do?

Of course IMHO a mere change of case doesn't go far enough.

[DocTomoe]

You do realize that US planes still have to be able to fly to countries other than the US, and vice versa, right?

[oh_sigh]

How much experience do you have reading all-caps text? It isn't necessarily a burden to people who are used to it, which all airline pilots are.

[everdev]

I'm sure prior experience is a big factor, but I could see how the greater height variances in lower case text can make it easier to read.