Supplemental type certificate · Williams Robert or Barbara
- Holder
- Williams Robert or Barbara · United States
- Status
- Current · Amended
- Status date
- December 13, 1988
- Applied
- June 7, 1971
- Product
- Aircraft · Single-Engine
- Certification basis
- Part 21
From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 5, 2025.
What it approves
Install Lycoming O-360-( ) engine and Hartzell HC-C2YK-1B/7666A-2 or Sensenich 76EM8S5 or McCauley 1A170EFA 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 · 5
| Make | Model | Data sheet |
|---|
| Piper Aircraft Inc. | PA-28-140 | 2A13 |
| Piper Aircraft Inc. | PA-28-150 | 2A13 |
| Piper Aircraft Inc. | PA-28-151 | 2A13 |
| Piper Aircraft Inc. | PA-28-160 | 2A13 |
| Piper Aircraft Inc. | PA-28-161 | 2A13 |