Name:   MartiniMan - Subject:   Notice to Airmen Date:   1/12/2023 8:08:45 AM

I can tell you as a private pilot that the NOTAM system has been a train wreck for quite a while.  We all use the same system, private pilots to airline crews.  And for the airlines or any commercial operation like charter (Part 135) you cannot fly without them.  They provide critical information about the departure/arrival airport, weather, outages of navigations systems, etc. 

Having said that, I can never recall a time when the whole system went down but it has probably happened and I just wasn't flying then.  But going down in the middle of the night is one thing, early morning is a nightmare.