ST01675CHOther aircraft modifications
Installation of Butterfly Valve Ring AIR23028 in starter control valves, part number 775538 or 799700.
FAA holder: Cook Airtomic
FAA-listed STC holder
The Jun 30, 2026 FAA DRS snapshot lists 4 selected supplemental type certificates with status Current under Cook Airtomic. The records span 50 public aircraft directories and 1 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
Showing the 4 most recently revised records. Category directories provide the complete paginated discovery path.
FAA holder: Cook Airtomic
FAA holder: Cook Airtomic
FAA holder: Cook Airtomic
FAA holder: Cook Airtomic