>Among other tower comments on a 10R departure were TWA "departing via the Piccadilly Line" and Pan Am "being a Hedge Clipper".
They weren't faring much better 130 miles further up Amber One, either.
Growing up under the airway near Castle Don., it was often possible to make out the over-large "Pan Am" markings on a lumbering -100 series, the intake "drone" being clearly audible, too.
I never did find out what kind of height they were making at this point, but the perspective was/is similar to that of an EK 777 departing Newcastle and passing over our ranch at FL180 or so. After around 30 miles track!