NEVER
AFTER 42 YEARS AS A LAE I HAVE NEVER I REPEAT NEVER PUT IN A DOWNLOCK PIN FOR A PUSH BACK AND HAVE NEVER WORKED FOR A AIRLINE (6) THAT WANTED YOU DO. AS WAS STATED THE AIRCRAFT IS BUILD NOT TO NEED ONE AND ITS ANOTHER THING TO FORGET ON PUSHBACK ON A WINDY WET DAY OR NIGHT WHEN THINGS CAN GET A BIT BUSY. KEEP THEM OUT AND KEEP THEM FLYING. FROM PAPA PETE