The metal patch was first discovered in 1991 on the atoll, according to TIGHAR, and was placed on Earhart's plane during a stop in Miami in 1937. The Miami Patch was an expedient field repair, Ric Gillespie, executive director of TIGHAR, told Discovery News.
Synthetic vision system. A modern synthetic vision system produced by Honeywell. A synthetic vision system (SVS) is a computer-mediated reality system for aerial vehicles, that uses 3D to provide pilots with clear and intuitive means of understanding their flying environment.
The differences between them are subtle, but very important. Synthetic refers to a manmade material with essentially the same chemical composition, crystal structure, and optical and physical properties as the natural gem material. There are also materials that simply look like natural gems. These products are called simulants or imitations, and can be either natural or manmade.