Technically speaking HDR is a description of displays, not video cameras.
Most professional cameras made this century record pictures of a dynamic range that is beyond the dynamic range of existing TVs.
In recent years consumer video cameras that have a "log" or "cine" gamma setting also record a high dynamic range.
HDR screen has to have a sufficiently powerful video processor as well as a bright screen.
If Dick needs a wing mounted camera and already has squirrelled a cable run from his gimbal then he has the means to make a long endurance 10bit low compression recording in the cabin from a good camera on the wing.
I've been using the Atomos HDR monitor/recorder in a helicopter this week.
It has a daylight viewable 1500nit screen and 10bit display.
Records 10bit HD or 4K with low compression on a robust and cheap SSD drive.
The Atomos makes an ideal recorder/pilot monitor for those cameras that can be wired into the cockpit.
It will replay your Top Gun footage into your 4K TV
, set it on loop play, to endlessly impress your clients or flying club mates.
In respect of cameras, global shutter and 10bit internal record or 10bit output is highly desirable.
Mickjoebill