We are in Phase 1 testing of N304R (LIV) and have found the logging capability of my hand held GPS (AV8OR) to be useful for quantifying ROC and IAS. Recently I became aware of Cloud Ahoy. That’s a web site that does all the data analysis for you. It’s free, and all it takes is a smart phone or any device that has a GPS. It’s especially useful for measuring take-off and landing ground roll. Once you correlate the data to density altitude you have a great input for making your POH more user friendly. Any other suggestions for data logging and analysis would be appreciated.

Carl