9 To ensure that the unmanned aircraft center of gravity (CG) limits are not exceeded, follow the aircraft loading instructions specified in the
A. Pilot's Operating Handbook or UAS Flight Manual.
Some aircraft come with a Pilot Operating Handbook and some come with an Aircraft Flight Manual. Why the different name, and is there a difference between them?
Both a POH and an AFM meet the "Operating Limitations" preflight requirement. The difference between the two is mainly in length and content: an AFM is usually a thinner document, satisfying the requirements of FAR 23.1581 and not much else, while a POH contains these required items plus other information like system diagrams.  The contents & format of a POH are standardized in GAMA's (General Aviation Manufacturers Association) Specification.
Parts of the POH, like the Limitations section, are FAA-Approved, and serve as the required AFM, and both documents are typically associated with a specific airframe by serial number.
A better explanation might be this:
The AFM is a regulatory document (it's contents are prescribed under the section of the regulations the aircraft was certificated under - Part 23, Part 25, etc). The POH is a GAMA-defined document whose contents meet the regulatory requirements of an AFM, and present other information in a standardized way so that a pilot can go from a Cessna to a Piper to a Mooney to a Socata and browse the book to learn about the airplane they're about to fly with all the information presented the same way no matter who the manufacturer is.
Now, the asterisk...

Part 107 aircraft aren't certified under Part 23 or Part 25, and an AFM/POH is not mandated by the rules. But of the three answers, this is the most correct.
This is correct. *
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