# STC SA03934NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: CESSNA Duesseldorf Citation Service, Germany
- Description: Installation of Garmin GTN 725
- Applied: June 20, 2017
- Status date: July 18, 2017
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- Certificate PDF: https://openairdocs.org/files/sha256/ef/38/ef38ca4c330d560c14e5ca0393aff39151fb2b108e07b60abbaa75f64a88629d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/263282885899A1F086258183005798DA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA03934NY

## ADs that name it (0)

None.

## Approved models (4)

- Textron Aviation Inc. 525 ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))
- Textron Aviation Inc. 525A ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))
- Textron Aviation Inc. 525B ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))
- Textron Aviation Inc. 525C ([TCDS A1WI](https://openairdocs.org/tcds/A1WI))

## 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 States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Page 1 of 3 FAA Form 8110-2 (5/14) Flughafenstrasse 50 IMPORT Number: SA03934NY This certificate issued to: CESSNA DUESSELDORF CITATION SERVICE CENTER GmbH 40474 Duesseldorf Germany Part 25 of the Federal Aviation Regulations.

A1WI Make: Textron Aviation Inc.

Model: 525, 525A, 525B and 525C Description of Type Design Change:

1. Installation of Garmin GTN 725 in accordance with Cessna Düsseldorf Master Document List, 2016-29-16, Rev. IR dated September 5, 2016 or later EASA approved revisions.

2. Aircraft is to be maintained in accordance with Cessna Düsseldorf Maintenance Manual Supplement, 2016-29-10, Rev. IR dated September 5, 2016 or later EASA accepted revisions.

3. Aircraft is to be operated in accordance with Cessna Düsseldorf Airplane Flight Manual Supplement, 2016-29-8, Rev. IR dated September 5, 2016 or later EASA approved revisions.

1. According to the limitation section of Cessna Düsseldorf Airplane Flight Manual Supplement, 2016-29-8, Rev. IR dated September 5, 2016 or later EASA approved revisions.

2. The modification is applicable to the following aircraft Serial Numbers: 525 S/N 525-0001 through 525-0684, 525-0686 through 525-0701;

525A S/N 525A-0001 and on; 525B S/N 525B-0001 through 525B-0056; 525B-0058 through 525B-0450; 525C S/N 525C-0001 and on.

3. G3000 equipped S/N are excluded.

4. The installer must determine whether this design change is compatible with previously approved modifications.

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

Date of Application: June 20, 2017 Date Reissued:

Date of Issuance: July 18, 2017 Date Am ended:

By Direction of the Administrator Signature Title Gaetano Sciortino Manager New York Aircraft Certification Office

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Page 2 of 3 FAA Form 8110-2 (5/14)

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SA03934NY To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA03934NY FAA Form 8110-2 (5/14) Page 3 of 3 Date of Issuance: July 18, 2017 Certification Basis:

Based on 14 CFR § 21.115 and § 21.101, and the FAA Order 8110.48, the certification basis for the Textron Aviation Inc.

525, 525A, 525B and 525C is as follows:

a. The type certification basis for the Textron Aviation Inc. 525, 525A, 525B and 525C is shown on TCDS A1WI for parts not changed or not affected by the change.

b. The type certification basis for the Textron Aviation Inc. 525, 525A, 525B and 525C is shown on TCDS A1WI for parts changed or affected by the change.

----------END---------- The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is th e property of the STC holder.

## Every issue (1)

- July 18, 2017: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ef/38/ef38ca4c330d560c14e5ca0393aff39151fb2b108e07b60abbaa75f64a88629d)

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