scope:

Description of Driving Event:

During the Procurement and Fabrication of the MPLM Support Vehicle, a specification was written for the truck tractor portion of the vehicle. An industry term Gross Combined Weight (GCW) was used and further defined in the specification as the combined weight of the trailer and associated equipment. This is contradictory to the industry term, which is the combined weight of the truck tractor and trailer. During proofload of the equipment it was noted that the proofload weight was not adequate. The vendor picked up on the industry term GCW and assumed a 50,000 lb. GCW. This is a combined tractor weight of 12,000 lb. and trailer weight of 38,000 lb. The intent of the specification was to have a 50,000 lb. trailer and associated equipment weight plus a truck tractor capable of pulling it which is approximately 12,000 lb. This would have resulted in a 24% undersized proofload.