justme69
it would appear that you are not a pilot. sure a pilot has a ''license'', but likely not a type rating...that would come with the job with the airline.
I learned to fly
Then I got hired at an airline which trained me on their type of airplane.
My airline flew the DC9/MD80.
My training department taught me how to recover from a stall right after takeoff.
My training department taught me that the RAT would be heated on the ground IF THE PLANE THOUGHT it was in the air.
MY airline's mechanics were taught this too.
MY plane's RAT was heated on the ground 3 times in 11 years of flying that type.
I BLAME THE AIRLINE(spanair) FOR NOT TEACHING< TESTING< the pilot's and mechanics in the same knowledge area that I was taught and tested in.
SIMPLE IS BETTER.