# STC SA09378AC-D

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-830.
- Applied: September 3, 1998
- Status date: September 8, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4CE](https://openairdocs.org/tcds/A4CE)
- Certificate PDF: https://openairdocs.org/files/sha256/f3/7a/f37a15133da6a9e478de8d85aee84f8f33b1e9209846720a606661e9bc7d94bb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/63B69CACD18A637785256CC1007F3ACA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA09378AC-D

## ADs that name it (0)

None.

## Approved models (27)

- Cessna Aircraft Company 206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company P206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TP206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TP206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TP206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TP206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TP206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company TU206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206 ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206A ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09378AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the fellowing prednet with the timentions and conditions therefes as specited hercen meets the airothiness requiements of Just 3 of the Civil Lin hegulutions.

Original Product Type Certifcate A umber:

Al edel:

A4CE Cessna 206, P206, U206, P206A, TP206A, U206A, TU206A.

P206B, TP206B, 0206B, TU206B, P206C, TP206C.

U206C, TU206C, P206D, TP206D, U206D, TU206D, P206E, TP206E, U206E, TU206E, U206F, TU206F, U206G, AND TU206G Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-830, according to Bulletin No. 930, dated 9-02-98 and Master Drawing List No. 921099, dated 9-02-98 or later FAA Approved revisions of the above data (14 Volt System).

Eligible on Models U206G and TU206G in Landplane, Floatplane or Amphibian Configuration.

(See Continuation Sheet, Page 2, a part of this STC.)

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

suspended, vercked or a temination date is otherese established ty the «Ádministator of the Federal tviatien

• deministration.

Tute of applintion: 9-03-98 Pate reisted:

Date of Issuance: 9-08-98 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINSTRATIO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 5A09378AC-D Limitations and Conditions: (con't.)

Also eligible on Models U206G and TU206G (Landplane, Floatplane, or Amphibian Configuration) When Modified By any of the following STCs: STC SA1513WE (Robertson STOL) or STC SA2353NM (Soloy Engine Conversion) and/or STC SA3634SW (Extended Range Fuel Tanks) and/or STC SA914NE (Wing Tip Extensions).

FAA/DAS Approved Supplemental Flight Manual, P/N 891768, dated 9-08-98 is required for Cessna Models 206, P206, U206, P206A, U206A, P206B, and U206B or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Supplemental Flight Manual, P/N 891769, dated 9-08-98 is required for Cessna Models TP206A, TU206A, TP206B, and TU206B or later FAA Approved revisions of the above supplement.

5. FAA/DAS Approved Supplemental Flight Manual, P/N 891770, dated 9-08-98 is required for Cessna Models P206C, TP206C, U206C, TU206C, P206D, TP206D, U206D, TU206D, P206E, TP206E, U206E, TU206E, U206F, TU206F; U206G and TU206G, (Landplane Configuration) and U206G and TU206G (Landplane Configuration) When Modified Per STC SA3634SW (Extended Range Fuel Tanks) and/or STC SA914NE (Wing Tip Extensions) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Supplemental Flight Manual, P/N 891771, dated 9-08-98 is required for Cessna Models U206G and TU206G (Landplane Configuration) When Modified Per STC SA1513WE (Robertson STOL) and/or STC SA914NE (Wing Tip Extensions) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Supplemental Flight Manual, P/N 891772, dated 9-08-98 is required for Cessna Models U206G & TU206G (Floatplane or Amphibian Configuration) And These Models When Modified Per STC SA3634SW (Extended Range Fuel Tanks) and/or STC SA2353NM (Soloy Engine Conversion) and/or STC SA914NE (Wing Tip Extensions) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Supplemental Flight Manual, P/N 891773, dated 9-08-98 is required for Cessna Models U206G & TU206G (Landplane Configuration) When Modified Per STC SA2353NM (Soloy Engine Conversion) With or Without STC SA3634SW (Extended Range Fuel Tanks) and/or STC SA914NE (Wing Tip Extensions) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Supplemental Flight Manual, P/N 891776, dated 9-08-98 is required for Cessna Models U206G & TU206G (Floatplane or Amphibian Configuration) When Modified Per STC SA1513WE (Robertson STOL) and/or STC SA914NE (Wing Tip Extensions) or later FAA Approved revisions of the above supplement.

10. Compatibility of this modification with other previously approved modifications must be determined by the installer.

FAR Form 8110-2 (10-68) Page 2 of 2 This certificate may be transferred in accordance with FAR 21-47.

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

Signature of grantor (In ink):

## Every issue (1)

- September 8, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f3/7a/f37a15133da6a9e478de8d85aee84f8f33b1e9209846720a606661e9bc7d94bb)

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