That is correct, there should always be 2 wing walkers during pushback. The main problem is that many get themselves into a position where there are out of view from the pushback driver at times. I have stopped several times until both wing walkers came back into my view. Then there are the pushback drivers that go so fast that the wing walkers have to jog in order to keep up with them. For an A/C as small as an RJ it is hard to imagine that anything ever got that close to begin with.
While there should for safety reasons, at on time pre-merger US used a one person pushback with no wing walkers IIRC. So policy-wise it would depend on the carrier. I know that PVD was mainline when I retired, but don't know what's happened since or if US still does any one-person pushbacks.
Ah yes, the days of the single person pushback... While I agree that having one wing-walker in certain stations is not a problem, there are no exceptions to having 2 wing-walkers on arrivals or departures anymore. I have noticed that SWA appears to only use one, and this has been in a few places where I would have expected them to use 2.
Sorry my mistake, for some reason I thought that it was a CRJ......
