Walked up Mt. Aire ridgeline towards summit. Dropped cornice onto slope which remotely triggered a 3' deep X 75' wide HS-ASc-R2-D2.5 on a due East aspect, 35 degrees, at 8500' just below summit. As wind slab pulled out it sympathetically released 2 other pockets that all ran together. Debris ran ~1200' and snapped trees that were 6" in diameter. Weak layer was 1mm facets above a melt freeze crust. Avalanche only occurred on the east aspect where the crust was present. Slab remained in place where the slope leaned more towards the north and where there was no crust.