I have traveled with the 1510-series from Pelican.
If you have status with a legacy carrier, you'll have very minimal issues with bringing this case on-board an aircraft.
However, if you tend to fly the budget or ULCC-sort, then don't take this case with you to travel.
At 12 lbs, the empty weight is already over 50% of what is authorized to be considered carry-on luggage.
I hope the creative response of what contents are inside weigh less than the case itself.
Otherwise, I have never been questioned about my Pelican cases when I have traveled.