You are not required to show the information to any other persons. Therefore, it is appropriate to ask for identification to establish that the inspector is acting on behalf of the FAA administrator--if so, you must therefore present them.
Steve, I am pretty sure this is incorrect. That Reg solely addresses "airman certificate, medical certificate, authorization, or license required by
this part [Part 61
]". The title of Part 61 of the Regs,
PART 61—CERTIFICATION: PILOTS, FLIGHT INSTRUCTORS, AND GROUND INSTRUCTORS, may not address the UAS registration certificate discussed under Sections 48 or 91. I suppose one could argue that the Section 91 amendment, which, according to that section, discusses the airworthiness certificates, is an "
airman certificate, medical certificate, authorization, or license" under section 61, but I think that would be wrong since it is not one of those things arising out of that section.
This will beg the question of who has the right to inspect a Section 91 certificate. Under Section 91.203 the certificate under that part must be "
displayed at the cabin or cockpit entrance so that it is legible to passengers or crew." Unfortunately this reading is completely inappropriate were it to be adopted for UAS usage.
To my reading, the interim final rule solely addresses Parts 1, 47, 48, 91 and 375. Upon reading of those sections, I don't see any Section or Part specifically addressing who is entitled to look at the certificate issued thereunder. Using the construction rules of law, "if a specific issue is addressed in one part or section without reference to another, and if that issue does not appear in another part or section, it is assumed that the drafter intended for the issue NOT to be addressed in that section."
Between you and me, I believe it is an oversight, but it can be a nasty one if non-intended individuals are not restricted from demanding to see a section 47, 48 or 91 certificate.
If you have a cite to another section, I would be glad to look at it.