USN T-45 Grounded After Pilots Strike

[SpazSinbad]

Looks as though at least one cause for the T-45C oxy problems has been found.
Navy T-45 Trainers Will Return To Flight In July With Air Supply Fix 30 Jun 2017 Sydney J. Freedberg Jr.

"...One mystery was that the T-45 used the exact same OBOGS, built by Cobham, as other aircraft that were having no problems. Now, Navy investigators believe they have traced at least part of the problem: While the oxygen generator itself seems okay, the T-45s didn’t have anything installed to scrub excess moisture from the air going into the OBOGS...." List of fixes follows: Navy T-45 Trainers Will Return To Flight In July With Air Supply Fix « Breaking Defense - Defense industry news, analysis and commentary