A run of approaches around the 11th sounded noticeably softer than usual, almost gliding in — then back to the usual roar by the next day. Nothing conclusive in the numbers said why, but the timing lined up a little too well with a drop in wind. That feeling is the reason Wind Rotation now lives inside Expert Mode: a compass showing which way the wind was blowing across eight fixed slots through the day, laid against the real heading the aircraft were actually flying, with the average peak noise for each slot sitting right beside it — headwind, tailwind or crosswind, spelled out plainly instead of left as a number of degrees to puzzle over.
Expert Mode itself has been quietly growing since it first went live: the official Leq_dn and EU Lden sitting next to our own peak-by-peak measurement, now dressed properly with a real section title instead of a small toggle label, and a "why two numbers" explainer boxed off the way it deserves rather than buried in fine print. You can also step backward and forward through the days Wind Rotation covers one at a time now, instead of scrolling back up the page every time to change date.
None of this proves the wind theory — a handful of days, almost entirely landings, is not enough to say anything for certain, and today is not the day that gets decided. But tomorrow the runway finally mixes real departures back in with the arrivals, the first genuinely varied traffic since Wind Rotation went up. Worth a proper look once those numbers land.