# STC SA4-1056

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Hemet Valley Flying Service Co., United States
- Description: Fabric covering attachment with screws instead of stitching.
- Status date: February 19, 1971
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: TCDS 2-548, TCDS 785
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DACC98602DA158E785256CC2000C5CA7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-1056

## ADs that name it (0)

None.

## Approved models (2)

- General Dynamics Corporation 28-5ACF (TCDS 785)
- General Dynamics Corporation PBY-5 (Army OA-10) (TCDS 2-548)

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