Originally Posted by
1201alarm
Could you may be specify the source?
My pleasure, it's the ultimate go-to on this matter:
https://www.faa.gov/documentlibrary/...%20booklet.pdf.
Notably, the recently updated FAA AC 90-120 is also a great resource, the list of referenced materials is priceless.
https://www.faa.gov/regulations_poli...mentID/1043337