| | | | | | | | |
| Subsidiary | Ownership Percentage | State (Province), Country of Incorporation |
| Astronics Test Systems, Inc. | 100% | | Delaware, USA |
| Astronics DME LLC | 100% | | Florida, USA |
| Astronics AeroSat Corporation | 100% | | New Hampshire, USA |
| Luminescent Systems, Inc. | 100% | | New York, USA |
| Astronics Air, LLC | 100% | | New York, USA |
| Max-Viz, Inc. | 100% | | Oregon, USA |
| Peco, Inc. | 100% | | Oregon, USA |
| Ballard Technology, Inc. | 100% | | Washington, USA |
| Astronics Advanced Electronic Systems Corp. | 100% | | Washington, USA |
| LSI - Europe B.V.B.A. | 100% | | Belgium |
| Luminescent Systems Canada, Inc. | 100% | | Quebec, Canada |
| PGA Electronic s.a. | 100% | | France |
| Astronics France | 100% | | France |
| Astronics Air II LLC | 100% | | New Hampshire, USA |
| Armstrong Aerospace, Inc. | 100% | | Illinois, USA |
| Astronics Custom Controls Concepts Inc. | 100% | | Washington, USA |
| Astronics Connectivity Systems and Certification Corp. | 100% | | Illinois, USA |
| Freedom Communication Technologies, Inc. | 100% | | Texas, USA |
| Diagnosys Holdings Inc. | 100% | | Delaware, USA |
| Diagnosys Inc. | 100% | | Delaware, USA |
| Diagnosys (Pinpoint) Inc. | 100% | | Florida |
| Diagnosys (Customer Support) Inc. | 100% | | Florida |
| Diagnosys Systems, Inc. | 100% | | Delaware |
| Diagnosys Ferndown Limited | 100% | | England |
| Diagnosys GmbH | 100% | | Germany |
| Diagnosys Electronics (I) Private Limited | 100% | | India |
| Astronics Europe | 100% | | France |
| Astronics Connectivity Systems & Certification Ukraine | 100% | | Ukraine |
| Huizhou Telefonix Co., Ltd. | 100% | | China |
| Alliance Technology HK Limited | 100% | | Hong Kong |