Based on the wreckage of one Blackhawk helicopter that was used in Bin Laden raid and destroyed with explosives by the Seals after it landed heavily at Bin Laden's compound and got damaged, many military analysts believe the aircraft involves hitherto unknown modifications to reduce its radar visibility and muffle noise.
According to one former air expert, the distinctive hard-angled shape of this destroyed Blackhawk didn’t look like a traditional Black Hawk but resembled the fuselage of the F-117 Stealth Fighter, which was created to deflect radar.
Because the U.S. didn’t warn Pakistan about the attack for fear of leak, the helicopters had to fly to the compound from their base in Afghanistan without being alerted by Pakistan’s military.
Experts also mentioned that a circular cover over the helicopter’s tail rotor could dampen noise to make people on the ground hardly recognize the helicopter’s arrival. Some people living near the area said they didn’t hear the helicopters until they were almost directly overhead. The rear end bears no resemblance to that of the Black Hawk typically used by the:U.S. special forces
An image of the UH-60 Black Hawk, a workhorse with U.S. forces including the Army, Navy and Airforce
In order to kill the Osama bin Laden, the military team arrived in two helicopters, that were officially descried as Blackhawks, the Sikorsky-made US military's workhorse helicopter for the past 30 years. The Pentagon now refuses to answer questions related to the Blackhawks used in the Bin Laden raid.
The rotor of the crashed “stealth” helicopter (left) from Sunday's raid and a close up of a standard UH-60 Black Hawk helicopter
The aircraft has distinctive features including the smooth and angular outer shell, covered rotor blades and pointed rear end
A writer for website Defense Tech suggested that the aircraft was a modified version of the MH-60 Black Hawk, which was manufactured by Sikorsky and first entered service with the U.S. army in 1979.
SEALs and other special forces have access to the latest military hardware, potentially explaining why they would have used an experimental or secret helicopter type
The helicopter is removed by Pakistan’s soldiers
Experts also speculated that the classified helicopter could be a descendant of the now abandoned RAH-66 Comanche stealth helicopter project