An interesting forum post here:

Something HUGE and really scary going on with aviation.

You can see for yourself. I am a former airline captain, I am out of the industry but I still keep tabs of what is going on. I have an app on my phone, it’s a free app that you can download yourself, it is called flightradar24. One of the really cool features of this app is you can have alerts set up so if an aircraft somewhere in the world declares an emergency, in the industry we call it squawking 7700, you can get a notification. I’ve had this app for years and usually you would see one to four emergencies pop up every month. That’s how it’s always been, aviation is pretty safe, there’s not a whole lot of emergencies worldwide on the monthly basis. But over the last couple of months I have been getting notifications sometimes up to 10 times a day. I’ve already had four this morning! Something huge and scary is going on out there and nobody is talking about it. I am seeing so many aircraft declaring !!