My experience of attempting to correlate touchdown ‘g’ with a ‘heavy landing’ in regional aircraft – using older FDR/sensors, would suggest that great care has to be taken if you are to avoid constraining an operation. The FDR touchdown ‘g’ was a poor guide to a heavy landing which involved the structure – this always required a visual inspection.
I recall that the FAA conducted tests which involving filming routine landings, some at LCY. (FAA Atlantic City division) I will search my archives.
For the less erudite then the obvious option is to avoid those situations that might result in a heavy landing; see the briefings under the
Approach and Landing Techniques.