for N750A 11 Jan 2010 Keystone Helicopter Corporation installed 1.11:Nilyrd F4941-1110(1 MA in accordance with the listed Owe 66776-64887-011 Equip Changeover to DME-42 51876.66139 TCAS antenna install modification 080768458001-11-2 Window Install, Fwd Bulkhead UH R/H 08076A30T002.1 Aft Facing Bench S