# STC SA3148SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Century Flight Systems Inc, United States
- Description: Installation of Mitchell Automatic Flight System Model AK537 consisting of Century III Autopilot with Optional Radio Coupler and Glide Slope Coupler.
- Applied: June 24, 1976
- Status date: June 6, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6CE](https://openairdocs.org/tcds/A6CE)
- Certificate PDF: https://openairdocs.org/files/sha256/a9/db/a9db0a16509aebd24b1e272fbee20d242569aae4ce11dd1a607d56302cb4fc17
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5067B88F3912E82685256CC2000A9479.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3148SW-D

## ADs that name it (0)

None.

## Approved models (5)

- Textron Aviation Inc. 337E ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Textron Aviation Inc. 337F ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Textron Aviation Inc. 337G ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Textron Aviation Inc. 337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Textron Aviation Inc. T337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))

## 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.

Btpartment of transportation —federal aoiation administration Supplemental l^pe Certificate <suvrrvvev1' SA3148SW-D Century Flight Systems, Inc.

F.M. 1195 P. 0. Box 610 Mineral Wells, TX 76067 ^in^^fy^i^de&iiaAVft&Jin&ftt&ciuf^^ 23 Federal Aviation A6CE Cessna 337E, 337F, 337G, 337H & T337H Installation of Mitcnell Aumatic Flight System Model AK537 consisting of a Century III Autopilot with Optional Radio Coupler and Glide Slope Coupler according to Bulletin No. 658, Revision 1, dated 3-6-78 and Master Drawing List No. 87A871, Revision A, dated 3-6-78 (28 Volt System) and/or later FAA Approved Revisions of the above data.

FAA/DAS Approved Supplemental Flight Manuals are required as follows: P/N 68S395-1-S, dated 3-30-78 is required for Cessna Models 337E, 337F & 337G, S/N 33701463 thru S/N 33701671 P/N 68S672-S, dated 3-30-78 is required for Cessna Model 337G, S/N 33701449 and S/N 33701672 and Up P/N 68S673-S, dated 3-30-78 is required for Cessna Model 337H P/N 68S677-S, dated 3-30-78 is required for Cessna Model T337H and/or later FAA Approved Revisions of the above Supplements, Placard, P/N 13A660-2 is required.

°ther approved modifications _X

• S.U'jfl 3-30-78; 6-6-84, Revision 2 <*f W* •*' ~1 Don P. Watson Manager, Aircraft Certification Division Southwest Region (Title)

This certificate may be transferred in accordant with f-AR 21.17.

FAAFmtM 1110-2(10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee).

(Address of transferee). (Xumtitr *nd ttrtfl) (City. Slate, •mi ^IP ntli I from (Name of grantor) (Print or type).

(Address of grantor) i>J Uratj (City. Suit, *nJ ZIP toil I Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- June 6, 1984: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a9/db/a9db0a16509aebd24b1e272fbee20d242569aae4ce11dd1a607d56302cb4fc17)

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