The World’s Most Secretive 737 Is America’s Key To Better Stealth Tech
Nobody knows exactly where “Rat 55” lives or precisely what technology it uses to accomplish its mission, but it sure is an exotic beast. The USAF’s secretive NT-43A testbed is a highly modified 737-200 that goes far beyond ground-based radar and infrared signature testing on stealthy aircraft by plying its trade high up in the sky in their target aircraft’s natural operating environment.

HT Clayton J. Stott 
#avgeek

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