Equipment for recording flight and engine use times on aircraft, comprises box containing aircraft movement and engine use detectors, a processor assigning times and dates and memory for results

摘要

Engine use is detected from the lubricating pressure indicator voltage and aircraft movement from wheel movement voltage and body accelerometer. A programmable clock dates and times the events which are collated by a micro controller to produce aggregate flight duration and engine use data. The information is stored in a memory and a security system ensures that modifications may only be made by authorized persons