This is a wonderful thread about the most superlative aircraft ever built.We were once fortunate enough to be given seats 1 C&D (I would have liked to see a roll-call of their previous occupants) and with regard to the hugely knowledgeable points made about fuel transfer and trim, during boarding and in flight the sound of fuel pumping was often louder than the Olympus music.During a visit to the FD the captain verified that these were the noisiest rows in the cabin despite their often being used by royalty and REAL A-listers. Many thanks for sharing your deep insights into this machine.