# STC SA3015SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell automatic flight system model AK-498 consisting of Piper altimatic IIIC autopilot with optional command/automatic electronic pitch trim, radio couplder and glide slope coupler.
- Applied: August 9, 1974
- Status date: August 1, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/54/73/547328fa31b711f31ed3dee02f9417d3dffaa4cf9ad61aa761bd8c066482a186
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F7F7F08E805A4E3285256CC2000A92B5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3015SW-D

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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.

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- • • • Btpartment of Transportatiwi —jNeral aoiation administration Supplemental t^pe Certificate <slu#rw€w SA3015SW-D Century Flight Systems, Inc P.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 .j5^<4^^<zia.M^»»y^j5l^&<&<W?^y^ -titeJiti*ux?i&im4^^aJ4*^ LI VI I. Air A8EA Piper PA-31-350 Installation of Mitchell Automatic Flight System Model AK498 consisting of Piper Altimatic IIIC Autopilot with Optional Command/Automatic Electronic Pitch Trim, Radio Coupler and Glide Slope Coupler according to Bulletin No. 621, Revision 5, dated 9-27-77 and Master Drawing List No. 87A733, Revision E, dated 9-27-77 (28 Volt System) and/or later FAA Approved Revisions of the above data.

FAA/DAS Approved Airplane Flight Manual Supplement, P/N 68S191-2, dated 1-17-78 is required for Piper Model PA-31-350, S/N 31-7752000 and below and/or later FAA Approved Revision of the above supplement.

See Continuation Sheet, Page 2, a part of this STC °th« -y, modification, *<£ &*• H-26-75; 2-9-76; 1-17-78;

8-1-84, Revision 4 P. Watson <$>g™<>»<) Manager, Aircraft Certification Division Southwest Jteizion (Title) t7.

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Bcpartmmt of Ttransportatfon— Jfedoral auiation Administration Supplemental ICgpe Certificate(Confirmation £hcct) SA3015SW-D, Revision 4, dated 8-1-84 LIMITATIONS AND CONDITIONS:

FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 68S606, dated 1-17-78 is required for Piper Model PA-31-350, S/N 31-7752001 and Up and/or later FAA Approved Revision of the above supplement.

Placard, P/N 13A660 is required for aircraft with an Airplane Flight Manual.

Placard, P/N 13A660-1 is required for aircraft with a pilot's Operating Handbook.

Any alteration of this ctrtifaatt is punishable by a fine of not exceeding f 1,000, or imprisonment not exceeding 3 years, or both.

FAA FORM Biio.2.1 (io-«B) This eirltficaU may In ItauftrrtJ it aeeerjaiut aM FAR 21.47.

**PAOE 2 OF 2 PAGES**

INSTRUCTIONS: Tha transfer endorsement below may ba used to notify the appropriate FAA Regional Office of tha transfer of tha Supplemental Typa Certificate.

The FAA will reissue tha certificate in the name of the tranEfaree and forward it to him.

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

Signature of grantor (In ink) :

## Every issue (1)

- August 1, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/54/73/547328fa31b711f31ed3dee02f9417d3dffaa4cf9ad61aa761bd8c066482a186)

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