The new model incorporated all of the modifications made to the UH - 60A fleet as standard design features .
Due to weight increases from the addition of mission equipment and other changes , the Army ordered the improved UH - 60L in 1987 .
The new model incorporated all of the modifications made to the UH - 60L     fleet as standard design features .
Due to weight increases from the addition of mission equipment and other changes , the Army ordered the improved UH - 60L in 1987 .