Using a Cessna 172 dropped from a height of 100 feet, NASAs Search and Rescue Mission Office simulated a severe but survivable plane accident Wednesday .\rbr\rbrYou have To Watch It .and Sub.. \rbr\rbrNASA is conducting a series of tests on flight safety mechanisms by intentionally dropping airplanes from 100 feet directly into the ground. Plane crashes are .\rbr\rbrКраш тест самолёта от NASA NASA Crashes Plane to Test Emergency Devices Using a Cessna 172 dropped from a height of 100 feet, NASAs Search and .