# STC SA1056SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Williams Robert or Barbara, United States
- Description: Revise wing contours, leading edge and redesign landing light deflector plates.
- Status date: April 27, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2CE](https://openairdocs.org/tcds/A2CE), [TCDS A6CE](https://openairdocs.org/tcds/A6CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D59AC899D43CFC7385256CC10080DD0F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1056SW

## ADs that name it (0)

None.

## Approved models (12)

- The Cessna Aircraft Company 336 ([TCDS A2CE](https://openairdocs.org/tcds/A2CE))
- The Cessna Aircraft Company 337 ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337A (USAF 02B) ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337B ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337C ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337D ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company 337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company T337C ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company T337D ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company T337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- The Cessna Aircraft Company T337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))

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