UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: December 14, 2017 4:00 P.M.
Form: S-4
CIK: 0001021162
Company Name: TRIUMPH GROUP INC
File Number: 333-221541
CIK: 0001477385
Company Name: Triumph Processing, Inc.
File Number: 333-221541-46
CIK: 0001722301
Company Name: Triumph Aviation Services - NAAS Division, Inc.
File Number: 333-221541-45
CIK: 0001722299
Company Name: Triumph Aerostructures - Tulsa, LLC
File Number: 333-221541-44
CIK: 0001722295
Company Name: Triumph Thermal Systems - Maryland, Inc.
File Number: 333-221541-43
CIK: 0001722293
Company Name: Triumph Actuation Systems - Yakima, LLC
File Number: 333-221541-42
CIK: 0001722298
Company Name: MEP NAAS, Inc.
File Number: 333-221541-41
CIK: 0001477308
Company Name: Triumph Instruments - Burbank, Inc.
File Number: 333-221541-40
CIK: 0001477389
Company Name: Triumph Structures - Los Angeles, Inc.
File Number: 333-221541-39
CIK: 0001477386
Company Name: Triumph Brands, Inc.
File Number: 333-221541-38
CIK: 0001477184
Company Name: Triumph Group Operations, Inc.
File Number: 333-221541-37
CIK: 0001477188
Company Name: Triumph Group Acquisition Corp.
File Number: 333-221541-36
CIK: 0001477186
Company Name: Triumph Group Acquisition Holdings, Inc.
File Number: 333-221541-35
CIK: 0001477387
Company Name: Triumph Fabrications - Fort Worth, Inc.
File Number: 333-221541-34
CIK: 0001477388
Company Name: Triumph Engineered Solutions, Inc.
File Number: 333-221541-33
CIK: 0001477183
Company Name: Nu-Tech Brands, Inc.
File Number: 333-221541-32
CIK: 0001477182
Company Name: Triumph Fabrications - San Diego, Inc.
File Number: 333-221541-31
CIK: 0001477180
Company Name: Triumph Turbine Services, Inc.
File Number: 333-221541-30
CIK: 0001477179
Company Name: Triumph Engineering Services, Inc.
File Number: 333-221541-29
CIK: 0001477178
Company Name: Triumph Actuation Systems - Valencia, Inc.
File Number: 333-221541-28
CIK: 0001477177
Company Name: Triumph Composite Systems, Inc.
File Number: 333-221541-27
CIK: 0001477390
Company Name: Triumph Thermal Systems, Inc.
File Number: 333-221541-26
CIK: 0001477176
Company Name: Triumph Gear Systems, Inc.
File Number: 333-221541-25
CIK: 0001477391
Company Name: Triumph Aftermarket Services Group, LLC
File Number: 333-221541-24
CIK: 0001477175
Company Name: Triumph Aerospace Systems Group, LLC
File Number: 333-221541-23
CIK: 0001477392
Company Name: Triumph Structures - Wichita, Inc.
File Number: 333-221541-22
CIK: 0001477174
Company Name: Triumph Accessory Services - Grand Prairie, Inc.
File Number: 333-221541-21
CIK: 0001477309
Company Name: Triumph Investment Holdings, Inc.
File Number: 333-221541-20
CIK: 0001477394
Company Name: Triumph Aviations Inc.
File Number: 333-221541-19
CIK: 0001477311
Company Name: Triumph Actuation Systems - Connecticut, LLC
File Number: 333-221541-18
CIK: 0001477312
Company Name: Triumph Actuation Systems, LLC
File Number: 333-221541-17
CIK: 0001477408
Company Name: HT Parts, L.L.C.
File Number: 333-221541-16
CIK: 0001477409
Company Name: Triumph Structures - Long Island, LLC
File Number: 333-221541-15
CIK: 0001477314
Company Name: Triumph Controls, LLC
File Number: 333-221541-14
CIK: 0001477316
Company Name: Triumph Insulation Systems, LLC
File Number: 333-221541-13
CIK: 0001477321
Company Name: Triumph Gear Systems - Macomb, Inc.
File Number: 333-221541-12
CIK: 0001477412
Company Name: Triumph Structures - Kansas City, Inc.
File Number: 333-221541-11
CIK: 0001477413
Company Name: Triumph Structures - East Texas, Inc.
File Number: 333-221541-10
CIK: 0001497086
Company Name: Triumph Aerostructures, LLC
File Number: 333-221541-09
CIK: 0001497257
Company Name: Triumph Aerostructures Holdings, LLC
File Number: 333-221541-08
CIK: 0001278885
Company Name: Triumph Structures - Everett, Inc.
File Number: 333-221541-07
CIK: 0001577518
Company Name: Triumph Engine Control Systems, LLC
File Number: 333-221541-06
CIK: 0001577517
Company Name: Triumph Aerostructures Real Estate Investment Co., LLC
File Number: 333-221541-05
CIK: 0001497153
Company Name: Triumph Fabrications - Orangeburg, Inc.
File Number: 333-221541-04
CIK: 0001278888
Company Name: VAC INDUSTRIES INC
File Number: 333-221541-03
CIK: 0001477397
Company Name: Triumph Airborne Structures, Inc.
File Number: 333-221541-02
CIK: 0001615348
Company Name: Triumph Engine Control Holdings, Inc.
File Number: 333-221541-01