# STC SA5386SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-Tec System 40/50 single and two axis automatic flight guidance systems, Model ST-280-40/50
- Applied: March 20, 1989
- Status date: May 12, 1989
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA)
- Certificate PDF: https://openairdocs.org/files/sha256/73/86/7386075167c4ebc1565ccddf978dd4287e2c2cd28a9f6ec9e4f0bba6f5ec1dec
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2C66AEF7BF49F45085256CC2001228C7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5386SW-D

## ADs that name it (0)

None.

## Approved models (3)

- True Flight Holdings LLC AA-5 ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))
- True Flight Holdings LLC AA-5A ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))
- True Flight Holdings LLC AA-5B ([TCDS A16EA](https://openairdocs.org/tcds/A16EA))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

United grates or America Bepartment of transportation — Jptderal Elation administration mpplementalCertificate &z SA5386SW-D S-TEC Corporation Rt. 4, Bldg. 946 Wolters Industrial Complex Mineral Wells, Texas 76067 Federal Air23 A16EA Gulfstream Aerospace (Grumman American) AA-5, AA-5A and AA-5B Installation of S-TEC System 40/50 Single and Two Axis Automatic Flight Guidance Systems, Model ST-280-40/50, according to Bulletin No. 380, Revision 1, dated 4-17-89 and Master Drawing List No. 92317, dated 4-17-89 and/or later FAA Approved revisions of the above data (14 Volt System).

1. Gulfstream Aerospace (Grumman American) Model AA-5 eligible only on System 40.

2. FAA Approved Supplemental Flight Manual, P/N 89591, dated 4-02-85 is required for Gulfstream Aerospace (Grumman American) Models AA-5, AA-5A and AA-5B for S-TEC 'System 40 and/or later FAA Approved revisions of the above supplement.

XSee Continuation Sheet, Page 2, a part of this STC.)<-^^<^7</!<^<^^Z?Z<3#,<£^'xi4«W«>^^^^_<£y£<^ £xcrm^ntd on,: 3-20-89 .' 4~*02~85 : 5-12-89, Revision 1 (Signature) Harold W. Holdeman DAS Staff Coordinator, DAS 5 SW___ __-

**FAA FOIM 8110-2 (10-68)**

ttnittd £tatu of Slmmra Bepartment of transportation— Jfedcral atrtation administration Supplemental t:gpe Certificate(Continuation £heet) SA5386SW-D, Revision 1 Limitations and Conditions (con't.)

3. FAA Approved Supplemental Flight Manual, P/N 89591-1, dated 5-12-89 is required for Gulfstream Aerospace (Grumman American) Models AA-5, AA-5A and AA-5B for S-TEC System 40 and/or later FAA Approved revisions of the above supplement.

4. FAA Approved Supplemental Flight Manual, P/N 89592, dated 4-02-85 is required for Gulfstream Aerospace (Grumman American) Models AA-5A and AA-5B for S-TEC System 50 and/or later FAA Approved revisions of the above supplement.

5. FAA Approved Supplemental Flight Manual, P/N 89592-1, dated 5-12-89 is required for Gulfstream Aerospace (Grumman American) Models AA-5A and AA-5B for S-TEC System 50 and/or later FAA Approved revisions of the above supplement.

6. Compatabi 1 ity of this modification with other previously approved modifications must be determined by the installer.

alteration of this certificate is punishable by a fine of not exceeding Si,000, or imprisonment not exceeding 3 years, or both.

FORM eiio-2-i (10-69) This certificate may be transferred in accordance with FAR i'/.-l?

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZJP code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- May 12, 1989: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/73/86/7386075167c4ebc1565ccddf978dd4287e2c2cd28a9f6ec9e4f0bba6f5ec1dec)

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