Для радаров у них есть еще и другой борт.....
NT-43A Radar Test Bed, c/n 20702
The Air Force operates a modified T-43A (737-200) as a Radar Test Bed (RTB) with radar imaging gear on its nose and tail in radomes that are 9 feet long and over 6.5 feet in diameter. The RTB is used to make radar images of stealthy aircraft. The images are used to evaluate the effectiveness of their stealth characteristics, to reveal the rate of degradation of the radar deflecting and absorbing components as the aircraft age, and to determine the effectiveness of maintenance and repair methods.
T-43A, 73-1155 carries Boeing construction number 20702. It first flew on July 2, 1974 and was delivered to the Air Force ten days later. It served initially as a navigation trainer. It was retired from that role and delivered to AMARC on September 25, 1997. Identified as TH002, it was sealed with spraylat and sat in the desert sun for over two years. 73-1155 was selected for modification as the Radar Test Bed. It was pulled out of storage at AMARC and delivered to the Ogden Air Logistics Center (OO-ALC) at Hill Air Force Base, Utah for refurbishment on November 19, 1999.
73-1155 was flown to an aircraft maintenance and modification facility at Goodyear, Arizona in March 2000 for the installation of the enormous radomes on its nose and tail. DENMAR, Inc. was the prime contractor for the modification of the NT-43A. It is run by Denys Overholser, who wrote the "Echo 1" software used to evaluate the stealth characteristics of the Have Blue and F-117A Stealth Fighter. Under contract to DENMAR, Inc., the Lockheed Skunk Works designed and fabricated the mounts for radar installations on the nose and tail of the RTB at Air Force Plant 42 on the grounds of the Palmdale Airport in California. The mounts are made primarily of carbon epoxy honeycomb sandwich with machined aluminum fittings. They are 16.5 feet long and 6.2 feet in diameter. After conversion, it was rolled out on February 22, 2001. Its first flight in its new configuration was flown on March 21, 2001.