# STC SA4-207

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Wagner Aircraft Service, United States
- Description: Spar reworked to facilitate rigging of metalized wings.
- Status date: January 1, 1960
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-768](https://openairdocs.org/tcds/A-768), [TCDS A-799](https://openairdocs.org/tcds/A-799)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F1823BBC92AECB04862570CE007304BD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-207

## ADs that name it (0)

None.

## Approved models (3)

- The Cessna Aircraft Company 120 ([TCDS A-768](https://openairdocs.org/tcds/A-768))
- The Cessna Aircraft Company 140 ([TCDS A-768](https://openairdocs.org/tcds/A-768))
- The Cessna Aircraft Company 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799))

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