The other concern which must be highlighted is that the Design Standards are dynamic, living documents.
Just because one reads whatever in FAR 25 at current issue, please do not fall into the trap of thinking that your faithful, old dogwhistle (certificated to an ancient version of the Standard) has any knowledge of the the current words. One ALWAYS MUST dig out the TCDS for the Type, check the frozen applicable Standard ... and then USE THAT version of the Standard in bar room discussions ....