# STC SA3-425

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Signature Flight Support, United States
- Description: Installation of one-piece windshield, electrically heated or bird-proof.
- Status date: September 12, 2002
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A2](https://openairdocs.org/tcds/6A2), [TCDS A-618](https://openairdocs.org/tcds/A-618), [TCDS A-669](https://openairdocs.org/tcds/A-669)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/07470FC2B43758DD85256CC20008CC71.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-425

## ADs that name it (0)

None.

## Approved models (15)

- McDonnell Douglas Corporation DC-3 Series ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3-G102 ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- McDonnell Douglas Corporation DC3-G103A ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- McDonnell Douglas Corporation DC3-G202A Series ([TCDS A-618](https://openairdocs.org/tcds/A-618))
- McDonnell Douglas Corporation DC3A-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3A-S1CG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3A-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3A-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3A-SCG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3C-R-1830-90C (Army C-47B) ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3C-R-1830-90C (Navy R4D-6) ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation DC3D-R-1830-90C (Army C-117A) ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- McDonnell Douglas Corporation R4D-8 ([TCDS 6A2](https://openairdocs.org/tcds/6A2))
- McDonnell Douglas Corporation R4D-8Z ([TCDS 6A2](https://openairdocs.org/tcds/6A2))
- McDonnell Douglas Corporation Super DC-3 ([TCDS 6A2](https://openairdocs.org/tcds/6A2))

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