September 1, 20232 yr Hi. For some days I have been trying to identify a sound I hear only during descent on both the 787 and the 747. Don’t recall it in the 737 or a320, just the big Boeings. The sound is a four “deong,deong,deong,deong” sound about 1/4 second apart, so quite quick. Seems to happen most during flight phase changes like flaps. My first guess is trim wheel sound, but I don’t know. Anyone else? Thanks, -B
September 1, 20232 yr there's a 4-klaxon sound that happens when you deviate from your selected altitude. Could that be it? Ryzen 7 7800X3D/B650 X AX | 5090 | 32gig | Win10 | Pimax Crystal Light
September 1, 20232 yr Author 6 minutes ago, eslader said: there's a 4-klaxon sound that happens when you deviate from your selected altitude. Could that be it? Perhaps. I will research and see if I can find an example to compare. Thanks! -B
September 1, 20232 yr Author Eureka! By Jove Watson, you have solved the puzzle! That’s the elusive sound. Thank you. -B
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