# STC SA3021WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Vintage Aircraft, United States
- Description: Installation of wing spar reinforcement.
- Applied: December 26, 1974
- Status date: June 16, 2003
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-2-582](https://openairdocs.org/tcds/A-2-582)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/351BB86B5E1A830386256D8A006E6C21.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3021WE

## ADs that name it (1)

- [AD 75-27-09 R2](https://openairdocs.org/ad/75-27-09-R2): Wing Structure · Textron 18A, 18D, 18S (Army C-45C) and 27 more. Effective Aug 21, 1980. Cited in the text

## Approved models (2)

- Raytheon Aircraft Company Army AT-11 ([TCDS A-2-582](https://openairdocs.org/tcds/A-2-582))
- Raytheon Aircraft Company Navy SNB-1 ([TCDS A-2-582](https://openairdocs.org/tcds/A-2-582))

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