[fyt2024]

Is nm the official abbreviation for nautical miles? I assume it is natural miles. For me it is nanometers.

[buildsjets]

Officially, NM is the abbreviation for nautical miles when used in the context of aircraft operations. It’s not just a good idea, it’s the Law. Specifically, 14 CFR Part 1.2 of the United States Code of Federal Regulations.

https://www.ecfr.gov/current/title-14/chapter-I/subchapter-A...

[andkenneth]

Contextually no one is using nanometers in aviation nav applications. Many aviation systems are case insensitive or all caps only so capitalisation is rarely an important distinction.

[joemi]

Similarly, no pilot in the Devil’s Lake region is using DVL to mean Deauville, and vice versa. :)