Supplemental type certificate · Heliarc Welding Service Inc.
- Holder
- Heliarc Welding Service Inc. · United States
- Status
- Current · Issued
- Status date
- May 19, 1977
- Applied
- April 12, 1977
- Product
- Aircraft · Small Multi-Engine
- Certification basis
- Part 21
From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.
What it approves
Installation of exhaust turbo connector, P/N 042177-5.
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
This certificate is a scan without a text layerOpen the PDF to read it. 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 · 5
| Make | Model | Data sheet |
|---|
| Cessna Aircraft Company | 411 | A7CE |
| Cessna Aircraft Company | 411A | A7CE |
| Cessna Aircraft Company | 421 | A7CE |
| Cessna Aircraft Company | 421A | A7CE |
| Cessna Aircraft Company | 421B | A7CE |