# STC SA4-561

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Glasco-Air Products, United States
- Description: Application of glass cloth to fuselage and to horizontal and vertical stabilizer.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-797](https://openairdocs.org/tcds/A-797)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FECC197EEE1FB1A0862570C000788B7E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-561

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-14 ([TCDS A-797](https://openairdocs.org/tcds/A-797))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.