# STC SA1788GL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Special Aviation Systems, Inc, United States
- Description: Install engine ram air inlet system and modify cowling.
- Status date: October 9, 1992
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3SW](https://openairdocs.org/tcds/A3SW), [TCDS A4SW](https://openairdocs.org/tcds/A4SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EC7F733D5275E80485256CC10083D083.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1788GL

## ADs that name it (0)

None.

## Approved models (6)

- Ayres Corporation S2R-T11 ([TCDS A3SW](https://openairdocs.org/tcds/A3SW))
- Ayres Corporation S2R-T11 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW))
- Ayres Corporation S2R-T15 ([TCDS A3SW](https://openairdocs.org/tcds/A3SW))
- Ayres Corporation S2R-T15 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW))
- Ayres Corporation S2R-T34 ([TCDS A3SW](https://openairdocs.org/tcds/A3SW))
- Ayres Corporation S2R-T34 ([TCDS A4SW](https://openairdocs.org/tcds/A4SW))

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.