What 'stress', chopjock? And how does it create a greater likelihood of engine/tail rotor failure?
Ok is an engine or anti torque system more likely to fail / stall (LTE) at high loading or not so high loading.?
Yes I only fly singles and I know on a hot day with a light wind and quite heavy with fuel / pax etc it would require more power to climb out backwards down wind than to lift straight up off a cushion into wind. (I'm not talking about yanking up on the stick here).
I know the twins are doing it at a lighter than max weight to allow for this (helipad style), it just seems if the same power used for backing up was used to get going into wind, the exposure time to the risk would be less, or even be accomplished using less power (or an increased take off mass) and in my mind less risk of something breaking.