| | | | | | | | |
| 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 |
| Peco, Inc. | 100% | Oregon, USA |
| Astronics Advanced Electronic Systems Corp. | 100% | Washington, USA |
| Luminescent Systems 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 |
| Astronics Connectivity Systems & Certification Corp. | 100% | Illinois, USA |
| Diagnosys Holdings Inc. | 100% | Delaware, USA |
| Diagnosys Inc. | 100% | Delaware, USA |
| Diagnosys (Pinpoint) Inc. | 100% | Florida, USA |
| Diagnosys (Customer Support) Inc. | 100% | Florida, USA |
| Diagnosys Systems, Inc. | 100% | Delaware, USA |
| Diagnosys Ferndown Limited | 100% | England |
| Diagnosys GmbH | 100% | Germany |
| Diagnosys Electronics (I) Private Limited | 100% | India |
| Astronics Connectivity Systems & Certification Ukraine | 100% | Ukraine |
| Huizhou Telefonix Technology Co., Ltd. | 100% | China |
| Alliance Technology HK Limited | 100% | Hong Kong |