I am the assigned reviewer of this draft for IoTdir.

The draft’s main purpose seems to be to define trusted authentication in Unmanned Aircraft
 Systems. Trust is provided by way of enhancing the previously defined F3411 protocol 
 with a registration hierarchy.

From IoT perspective, integration of drones with IoT is very important but IoT is not even
 mentioned in the draft. In the Introduction, second paragraph mentions UAS RID must also 
 be accessible with ubiquitous and inexpensive devices without modification which should 
 probably add IoT there.

The draft is missing an RFC reference for Host Identity.
In Section 6.2, no example is given for extended transports. Since legacy transport is 
link layer, the extended transport should contain an IP stack.

The draft would benefit a lot from the addition of a list of acronyms for readability. 

ASTM stands for American Society for Testing and Materials. 
The acronym is heavily used in the draft but never expanded. 
The protocol F3411 mentioned above was developed by ASTM. 
I personally wondered why this work (and its derivatives) also could not be 
developed at ASTM.