# STC SA4-73

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Vern Dell Aircraft Metal Work Co, United States
- Description: Metal skins 0.020 24ST and/or 75ST aluminum alloy.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-787](https://openairdocs.org/tcds/A-787)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/26FC14CFD96DE109862570D00078A09C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-73

## ADs that name it (0)

None.

## Approved models (1)

- Univair Aircraft Corporation 415D ([TCDS A-787](https://openairdocs.org/tcds/A-787))

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