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ABC News are reporting that locals only heard helicopters "when the were overhead" which of course negates neither stealth-then-unstealthy or all-stealthy hypotheses. But predictably both electricity and cell services went and came back for the duration of the mission, so I'd be fairly confident saying that Pakistani air defence radar was plagued by glitches that evening (ideally unnoticed ones).






During the day, sure. But who operates interesting stuff during the day if they can avoid it? And the whole world is used to having police or ambulance or executive helicopters overhead, so I'd bet you could fly this thing round happily and only ever worry about the odd report surfacing.. And there have been odd reports of silent helicopters for years, of course. Even around Waco IIRC.


Are there any attributes of LO rotors that would increase the chances of encountering VRS?


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