SLF here, whom has taken years out of his life and understands the theory.
I live under the approach path in Cape Town, South Africa. Now ,being season,
Emirates & Qatar fly in a 777-300 every day. On an always straight-in approach, the engines are spooling up and down. Only the the 777s. Have A340s, A330s, 744s and the local 737s, but why only the 777s ?