# STC SA4-994

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Skybound Manufacturing Inc., United States
- Description: Installation of Firestone Model DFA-233 wheel assemblies, Model CFA-299 brake assemblies and6.50x8 6-ply tires.
- Applied: November 16, 1959
- Status date: June 25, 2003
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7243955A7FDC934886256D8A0069AE4F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-994

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-23 Series ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

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