|Feature A - Main Boss and Hole
In Feature A, the main bosses hold the
bearings which support the locking rod.
The hook on the landing gear door latches
onto the locking rod to secure the doors in flight.
The locking rod carries the full load of the
doors and the bosses have to be heavy enough to transfer the load into the uplock support.
The bosses are strengthened with
additional material in the depth and width on both sides of the main wall to carry the
full load. In the final design
the bosses are 1.3 inches in depth with a diameter of 2.0 inches to accommodate the
1.187" diameter bushing hole.