today one of my friend had a SIM training(737-800), he had a "sink rate" aural warning when in low altitude(200ft AGL or less) and the rate was 850 ft/min.
(which i never experienced)
and i remember that there is a digram including a envelope when the sink rate warning would be triggered according to the altitude and the rate of decend. but i cann`t find it now~
someone tell me where to find this digram?
thanks~