# STC SA09637AC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: S-TEC Corporation, United States
- Description: Installation of single S-TEC Meggitt Electronic Flight Instrument System (EFIS) in accordance with Master Data List 921229-02, Revision 5; or dual S-TEC Meggitt EFIS in accordance with Master Data List 921229-03, Revision 6, both dated 9-15-2004, or later FAA approved revision for Cessna 425.  FAA approved Airplane Flight Manual Supplement No. 892136, dated 9-20-2004, or later FAA approved revision is required for Cessna 425 with single or dual S-TEC Meggitt EFIS.
- Applied: September 4, 2003
- Status date: September 20, 2004
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21, Part 23
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE)
- Certificate PDF: https://openairdocs.org/files/sha256/c0/b8/c0b824151e35e6c36df3825f4c9d514b6670537de78a3399f0bb713a90548c58
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/76BEFEE33BCDC3FE86256F260068B3F7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09637AC

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 425 ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))

## 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.

FAA Form 8110-2(10-68) Page 1 of 3 ST19637AC PRM -150 Number SA09637AC This Certificate issued to S-TEC Corporation One S-STEC Way Mineral Wells, TX 76067-9236

Part 3 of the Civil Air Regulations and Part 23 of the Federal Aviation Regulations (see FAA letter dated 9/20/2004).

A7CE Original Product Type Certificate Number :

Make : Cessna 425

Description of Type Design Change: Installation of single S-TEC “Meggitt Electronic Flight Instrument System (EFIS)” in accordance with Master Data List 921229-02, Revision 5; or dual S-TEC “Meggitt EFIS” in accordance with Master Data List 921229-03, Revision 6, both dated 9-15-2004, or later FAA approved revision for Cessna 425.

FAA approved Airplane Flight Manual Supplement No. 892136, dated 9-20-2004, or later FAA approved revision is required for Cessna 425 with single or dual S-TEC “Meggitt EFIS.”

Limitations and Conditions: For a single EFIS configuration, the Cessna 425 must include both of the following:

Date of application : September 04, 2003

Date of issuance : September 20, 2004 Date reissued :

( Signature) Michele M. Owsley Manager, Airplane Certification Office, Southwest Region

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 3

FAA Form 8110-2-1(10-69) Page 3 of 3

Number SA09637AC Date of Issuance: September 20, 2004

a. Flight Mapping System GNS-530 with a moving map is required for this installation. Other Global Positioning System (GPS) sources may be compatible with the EFIS, but interface with these devices require FAA approval. A digital display of current track without a moving map is not authorized; and

b. An alternate heading display is required for this installation. The alternate heading display will be installed in the pilot’s primary field of vision and will be driven by the copilot’s heading source or the secondary Air Data Attitude Heading Reference System (ADAHRS) and flux gate.

Compatibility of this design change with previously approved modifications must be determined by the installer. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission.

ASW-150:PRMassie:x4637:pgs:G:\WP\S-TEC\SA09637AC.prm.doc.

## Every issue (1)

- September 20, 2004: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c0/b8/c0b824151e35e6c36df3825f4c9d514b6670537de78a3399f0bb713a90548c58)

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