Supplemental type certificate · AiResearch Manufacturing Company
- Holder
- AiResearch Manufacturing Company · United States
- Status
- Current · Amended
- Status date
- February 27, 1978
- Product
- Aircraft · Small Multi-Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Installation of AiResearch TPE 331-6-252M engines.
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 Approved models · 1
| Make | Model | Data sheet |
|---|
| Twin Commander Aircraft Corporation | 680W | 2A4 |