What it approves
Installation of pneumatic butterfly-shutoff valve, P/N 397794-1-1.
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
No AD in this release names this STC
Supplemental type certificate · AiResearch Manufacturing Company
- Holder
- AiResearch Manufacturing Company · United States
- Status
- Current · Issued
- Status date
- December 7, 1970
- Product
- Aircraft · Large Multi-Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.