If my memory serves correctly, it was standard ops to use only the No. 1 and No. 3 reversers on the DC 10 s if at all possible when landing away from base. Reasoning being that quite often the Reversers would partially deploy and/or not retract (cables sheared)......this would mean a lengthy delay at the line station as manually winding the translating sleeves back and the lockout proceedure takes some time way up there on the No. 2 .