# STC SA174GL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Zantop Air Transport Inc, United States
- Description: Modification of floor support between stations 228.5 and 353 to eliminate decrease in allowable floor loading with increased zero fuel weight.
- Status date: May 12, 1977
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A17](https://openairdocs.org/tcds/1A17)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/94F1D49D02D48F5D85256CC10083CFD3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA174GL

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-159 ([TCDS 1A17](https://openairdocs.org/tcds/1A17))

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