Originally Posted by
rickair7777
But legally it can include sim time. Or "helping with the radios" time in a single-pilot plane. Or even passenger time in an airliner if you really wanted to
"(c)Logging of pilot time. The pilot time described in this section may be used to:
(1) Apply for a certificate or rating issued under this part or a privilege authorized under this part; or
(2) Satisfy the recent flight experience requirements of this part."
"(j)Aircraft requirements for logging flight time. For a person to log flight time, the time must be acquired in an aircraft that is identified as an aircraft under § 61.5(b)"
https://www.law.cornell.edu/cfr/text/14/61.51
Since the logbook is a legal document for demonstrating fulfillment of FARs, I would not treat it as a journal as you suggest. If the flight time is not relevant to your professional career, keep separate logbooks/journals for drone time, "radio operator time", "passenger time", etc. Make no mistake, it is a Legal document!