Installation of AlliedSignal T5371A and T5317B engines in a Bell 205A-1 helicopter.
FAA holder: Hillsboro Aviation Inc
FAA-listed STC holder
The Jun 30, 2026 FAA DRS snapshot lists 11 selected supplemental type certificates with status Current under Hillsboro Aviation Inc. The records span 5 public aircraft directories and 5 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
Showing the 11 most recently revised records. Category directories provide the complete paginated discovery path.
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc
FAA holder: Hillsboro Aviation Inc