Supplemental type certificate · Johnston Aircraft Svc Inc
- Holder
- Johnston Aircraft Svc Inc · United States
- Status
- Current · Amended
- Status date
- February 5, 1979
- Applied
- November 30, 1976
- Product
- Aircraft · Single-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 Lycoming IO-720-A1B engine and Hartzell HC-C3YR-1RF/ F8475R constant speed propeller.
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 · 2
| Make | Model | Data sheet |
|---|
| The New Piper Aircraft Inc. | PA-36-285 (Restricted Cat.) | A10SO |
| The New Piper Aircraft Inc. | PA-36-300 (Restricted Cat.) | A10SO |