For those questioning this claim ... here's the 2008 FAA circular detailing LRBL, which itself is spelled out in Title 14, Code of Federal Regulations (CFR), part 25, § 25.795(c):

<https://www.faa.gov/documentLibrary/media/Advisory_Circular/...>

And the relevant CFR: <https://www.ecfr.gov/current/title-14/chapter-I/subchapter-C...>.

(TIL)