Originally Posted by
KC10 FATboy
Are you saying that if you have a left to right crosswind, if you pull the left engine thrust reverser, that the net effect is to get pulled upwind?
If so, you couldn't be more wrong. If you use reverse thrust, and the aircraft is pointed into the wind (regardless of one engine inoperative or not), the thrust vector is pointed downwind and behind you. Hence, you are pulled off the runway on the downwind side ... while pointed into the wind. I have a McD "Know Your Jet" advisory circular, 5 pages long, which warns pilots of exactly this.
Are you sure your AC specifically includes information on asymmetrical reverse?
I think the difference here is that your AC is talking about symmetrical reverse on both sides, where as I'm talking about asymmetrical reverse.
I believe the yawing moment generated and rudder sideforce required to counter the resultant yaw in the asymmetrical case should be much greater than the downwind component of any thrust line offset from reasonable crab angles.
Now if you have symmetrical reverse, then there is no resulting yawing moment and the downwind reverse component then becomes the primary factor, in which case I agree.
EDIT: Just realize the disconnect here... you were talking about MadDogs... MD80s perhaps? in that case you are right! Its because your engines are so close to centerline that the resultant yaw will be very minor when compared to equipment with wing engines.