i had to look it up but greater than 2.6 G OR greater than 600 Ft per min are considered HARD Landings -- exceeding the design load (1.5G)
https://skybrary.aero/articles/hard-...um%20for%20the
reading the TSB prelim finding was this
Quote:
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At 1412:30, while the aircraft was descending through 153 feet AGL, its indicated airspeed increased to 154 knots whereas the ground speed did not change appreciably, consistent with a performance-increasing wind gust. The PF pulled back the thrust levers, and as a result, over the following 5 seconds, N1 decreased from 64% to approximately 43%, where it remained until touchdown. The airspeed began to decrease.
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Note: the phrase "performance-increasing wind gust" is referring to a wind shear situation