Apparently it has something to do with the way the bogie fits into the wheel-well.
I’ve never really understood why this is so important. The 747 for example, has a tilting mechanism on the wing gear that straightens the bogie before retraction. In case of malfunction, it would be a reason not to retract the gear.
Maybe the designers of the 767 figured that it would be cheaper/simpler to omit the tilting mechanism and leave the gear “toe-down” when extended.
Last edited by eckhard; 18th February 2018 at 19:34.