EX-22.1 4 exhibit221tdg2025q110-q.htm EX-22.1
Exhibit 22.1
LISTING OF SUBSIDIARY GUARANTORS
The following series of senior subordinated and secured notes issued by TransDigm Inc., a wholly owned subsidiary of TransDigm Group Incorporated, are unconditionally guaranteed, on a joint and several basis, by TransDigm Group Incorporated and each of the subsidiaries listed below under “Subsidiary Guarantors.”

| Description
| 5.50% senior subordinated notes due 2027 (“5.50% 2027 Notes”)
| 6.75% senior secured notes due 2028 (“2028 Secured Notes”)
| 4.625% senior subordinated notes due 2029 (“4.625% 2029 Notes”)
| 6.375% senior secured notes due 2029 (“2029 Secured Notes”)
| 4.875% senior subordinated notes due 2029 (“4.875% 2029 Notes”)
| 6.875% senior secured notes due 2030 (“2030 Secured Notes”)
| 7.125% senior secured notes due 2031 (“2031 Secured Notes”)
| 6.625% senior secured notes due 2032 (“2032 Secured Notes”)
| 6.00% senior secured notes due 2033 (“2033 Secured Notes”)

| Subsidiary Guarantors |  | Jurisdiction of Incorporation or Organization
| 4455 Genesee Properties, LLC |  | Delaware
| 4455 Genesee Street, LLC |  | Delaware
| 17111 Waterview Pkwy LLC |  | Delaware
| Acme Aerospace, Inc. |  | Delaware
| Adams Rite Aerospace, Inc. |  | California
| AeroControlex Group, Inc. |  | Delaware
| Aerosonic LLC |  | Delaware
| Airborne Acquisition, Inc. |  | Delaware
| Airborne Global, Inc. |  | Delaware
| Airborne Holdings, Inc. |  | Delaware
| Airborne Systems NA Inc. |  | Delaware
| Airborne Systems North America Inc. |  | Delaware
| Airborne Systems North America of CA Inc. |  | Delaware
| Airborne Systems North America of NJ Inc. |  | New Jersey
| AmSafe Global Holdings, Inc. |  | Delaware
| AmSafe, Inc. |  | Delaware
| Angus Electronics Co. |  | Delaware
| Apical Industries, Inc. |  | California
| Arkwin Industries, Inc. |  | New York
| Armtec Countermeasures Co. |  | Delaware
| Armtec Countermeasures TNO Co. |  | Delaware
| Armtec Defense Products Co. |  | Delaware
| Ashford Properties, LLC |  | Delaware
| Auxitrol Weston USA, Inc. |  | Delaware
| Aviation Technologies, Inc. |  | Delaware
| Avionic Instruments LLC |  | Delaware
| Avionics Specialties, Inc. |  | Virginia
| AvtechTyee, Inc. |  | Washington
| Beta Transformer Technology LLC |  | Delaware
| Breeze-Eastern LLC |  | Delaware

| Subsidiary Guarantors |  | Jurisdiction of Incorporation or Organization
| Bridport Erie Aviation, Inc. |  | Delaware
| Bridport Holdings, Inc. |  | Delaware
| Bridport-Air Carrier, Inc. |  | Washington
| Bruce Aerospace Inc. |  | Delaware
| Calspan Air Facilities, LLC |  | New York
| Calspan Air Services, LLC |  | New York
| Calspan ASE Portugal, Inc. |  | Minnesota
| Calspan Holdings, LLC |  | New York
| CALSPAN JETS LLC |  | Delaware
| Calspan Technology Acquisition LLC |  | Delaware
| Calspan, LLC |  | New York
| CDA InterCorp LLC |  | Florida
| CEF Industries, LLC |  | Delaware
| Champion Aerospace LLC |  | Delaware
| Chelton Avionics Holdings, Inc. |  | Delaware
| Chelton Avionics, Inc. |  | Delaware
| Chelton Defense Products, Inc. |  | Delaware
| CMC Electronics Aurora LLC |  | Delaware
| CPI EDB Intermediate Holdings, Inc. |  | Delaware
| CPI Electron Device Business, Inc. |  | Delaware
| CTHC LLC |  | New York
| Dart Aerospace USA, Inc. |  | Washington
| Dart Buyer, Inc. |  | Delaware
| Dart Helicopter Services, Inc. |  | Delaware
| Dart Intermediate, Inc. |  | Delaware
| Dart TopCo, Inc. |  | Delaware
| Data Device Corporation |  | Delaware
| Dukes Aerospace, Inc. |  | Delaware
| Electromech Technologies LLC |  | Delaware
| Esterline Europe Company LLC |  | Delaware
| Esterline International Company |  | Delaware
| Esterline Technologies Corporation |  | Delaware
| Esterline Technologies SGIP LLC |  | Delaware
| FPT Industries LLC |  | Delaware
| Genesee Holdings II, LLC |  | New York
| Genesee Holdings III, LLC |  | New York
| Genesee Holdings, LLC |  | New York
| HarcoSemco LLC |  | Connecticut
| Hartwell Corporation |  | California
| Heli Tech, Inc. |  | Oregon
| Hytek Finishes Co. |  | Delaware
| Iceman Holdco, Inc. |  | Delaware
| ILC Holdings, Inc. |  | Delaware
| Janco Corporation |  | California

| Subsidiary Guarantors |  | Jurisdiction of Incorporation or Organization
| Johnson Liverpool LLC |  | Delaware
| King Nutronics, LLC |  | Delaware
| Kirkhill Inc. |  | Delaware
| Korry Electronics Co. |  | Delaware
| Leach Holding Corporation |  | Delaware
| Leach International Corporation |  | Delaware
| Leach Mexico Holding LLC |  | Delaware
| Leach Technology Group, Inc. |  | Delaware
| MarathonNorco Aerospace, Inc. |  | Delaware
| Mason Electric Co. |  | Delaware
| McKechnie Aerospace DE, Inc. |  | Delaware
| McKechnie Aerospace Holdings, Inc. |  | Delaware
| McKechnie Aerospace US LLC |  | Delaware
| Medtherm Labs, LLC |  | Delaware
| Microwave Power Products, Inc. |  | Delaware
| NAT Seattle Inc. |  | Delaware
| NMC Group, Inc. |  | California
| Nordisk Aviation Products LLC |  | Delaware
| North Hills Signal Processing Corp. |  | Delaware
| North Hills Signal Processing Overseas LLC |  | Delaware
| Norwich Aero Products Inc. |  | New York
| Offshore Helicopter Support Services, Inc. |  | Louisiana
| Palomar Products, Inc. |  | Delaware
| Paravion Technology, Inc. |  | Colorado
| Pexco Aerospace, Inc. |  | Delaware
| PneuDraulics, Inc. |  | California
| Power Device Corporation |  | New York
| Raptor Labs HoldCo, LLC |  | Delaware
| Raptor Labs Intermediate, LLC |  | Delaware
| Schneller LLC |  | Delaware
| Semco Instruments, Inc. |  | Delaware
| Sensor Concepts, LLC |  | Delaware
| Shield Restraint Systems, Inc. |  | Delaware
| Simplex Manufacturing Co. |  | Oregon
| Skandia, Inc. |  | Illinois
| Skurka Aerospace Inc. |  | Delaware
| Space Electronics LLC |  | Delaware
| Symetrics Industries, LLC |  | Florida
| TA Aerospace Co. |  | California
| Tactair Fluid Controls, Inc. |  | New York
| TDG ESL Holdings Inc. |  | Delaware
| TEAC Aerospace Technologies, Inc. |  | Delaware
| Telair US LLC |  | Delaware
| TestVonics, Inc. |  | New Hampshire

| Subsidiary Guarantors |  | Jurisdiction of Incorporation or Organization
| Texas Rotronics, Inc. |  | Texas
| TransDigm UK Holdings Limited |  | United Kingdom
| Transicoil LLC |  | Delaware
| Whippany Actuation Systems, LLC |  | Delaware
| Young & Franklin Inc. |  | New York