X0101 EFFECT 33 LIVE 2010-01-12 16:00:00

S-4

0001021162 TRIUMPH GROUP INC 333-163300 0001477385 Triumph Processing, Inc. 333-163300-50 0001477389 Triumph Structures - Los Angeles, Inc. 333-163300-49 0001477386 Triumph Brands, Inc. 333-163300-48 0001477188 Triumph Group Acquisition Corp. 333-163300-47 0001477184 Triumph Group Operations, Inc. 333-163300-46 0001477186 Triumph Group Acquisition Holdings, Inc. 333-163300-45 0001477387 Triumph Fabrications - Fort Worth, Inc. 333-163300-44 0001477185 Triumph Instruments, Inc. 333-163300-43 0001477388 Triumph Engineered Solutions, Inc. 333-163300-42 0001477183 Nu-Tech Brands, Inc. 333-163300-41 0001477182 Triumph Fabrications - San Diego, Inc. 333-163300-40 0001477181 Triumph Precision Castings Co. 333-163300-39 0001477180 Triumph Turbine Services, Inc. 333-163300-38 0001477179 Triumph Engineering Services, Inc. 333-163300-37 0001477178 Triumph Actuation Systems - Valencia, Inc. 333-163300-36 0001477177 Triumph Composite Systems, Inc. 333-163300-35 0001477390 Triumph Thermal Systems, Inc. 333-163300-34 0001477176 Triumph Gear Systems, Inc. 333-163300-33 0001477391 Triumph Aftermarket Services Group, Inc. 333-163300-32 0001477175 Triumph Aerospace Systems Group, Inc. 333-163300-31 0001477392 Triumph Structures - Wichita, Inc. 333-163300-30 0001477174 Triumph Accessory Services - Grand Prairie, Inc. 333-163300-29 0001477305 Kilroy Steel, Inc. 333-163300-28 0001477306 Kilroy Structural Steel Co. 333-163300-27 0001477307 Triumph Metals Co 333-163300-26 0001477393 Triumph Precision, Inc. 333-163300-25 0001477308 Triumph Instruments - Burbank, Inc. 333-163300-24 0001477309 Triumph Investment Holdings, Inc. 333-163300-23 0001477394 Triumph Aviations Inc. 333-163300-22 0001477310 Triumph Aerospace Systems - Newport News, Inc. 333-163300-21 0001477407 Mexmil Holding Company, LLC 333-163300-20 0001477311 Triumph Actuation Systems - Connecticut, LLC 333-163300-19 0001477312 Triumph Actuation Systems, LLC 333-163300-18 0001477173 CBA Acquisition, LLC 333-163300-17 0001477408 HT Parts, L.L.C. 333-163300-16 0001477313 Triumph Interiors, LLC 333-163300-15 0001477409 Triumph Structures - Long Island, LLC 333-163300-14 0001477314 Triumph Controls, LLC 333-163300-13 0001477315 Triumph Group Holdings - Mexico, LLC 333-163300-12 0001477395 Triumph Group Investment - Mexico, LLC 333-163300-11 0001477316 Triumph Insulation Systems, LLC 333-163300-10 0001477396 Airframe Spares & Logistics, LLC 333-163300-09 0001477317 Mexmil China, LLC 333-163300-08 0001477397 Triumph Airborne Structures, Inc. 333-163300-07 0001477318 Triumph Fabrications - Hot Springs, Inc. 333-163300-06 0001477321 Triumph Gear Systems - Macomb, Inc. 333-163300-05 0001477398 Triumph Aerospace Systems - Wichita, Inc. 333-163300-04 0001477411 Lamar Electro-Air Corp 333-163300-03 0001477412 Triumph Structures - Kansas City, Inc. 333-163300-02 0001477413 Triumph Structures - East Texas, Inc. 333-163300-01