[9] NOTAMs are created and transmitted by government agencies and airport operators under guidelines specified by Annex 15: Aeronautical Information Services of the Convention on International Civil Aviation (CICA).
A NOTAM is filed with an aviation authority to alert aircraft pilots of any hazards en route or at a specific location, or Flight Information Region.
In September 2018, as a consequence of the findings of its investigation, the National Transportation Safety Board (NTSB) stated NOTAMs were unintelligible and ignored.
The Ukrainian air controller has been subjugated to issue NOTAMs under the UKFV code, basically a verbatim repeater.
[13][14] As a result all the UKFV NOTAMs advising about this area affix this note:[13] In the run-up to the 2022 Russian invasion of Ukraine, Russian authorities closed large parts of the Black Sea, the Kerch Strait, and almost the entire Sea of Azov "for missile and artillery live fire exercises."
There is an airshow being held at Oshkosh airport with aircraft flying 5,000 feet and below within a 5 nautical mile radius.