# STC SA01085DE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Textron Aviation Inc, United States
- Description: Master Drawing List, Doc No. MDL-TXT-001, LinxUs Legacy, Issue IR.1,
- Applied: July 20, 2021
- Status date: March 22, 2022
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- Certificate PDF: https://openairdocs.org/files/sha256/52/68/5268e4edc315550fe066ab9ac3f527ee782ba895e6e230c778ca7638ce530c60
- Approved model list and other attachments: [SA01085DE_AML.pdf](https://openairdocs.org/files/sha256/87/ca/87ca64b5eff57bfe142c0a841ddb2c2ffbb0699b660c0d44efc1f361bc3cbdcc)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9A93267BEC3CE72A86258824004FC9A0.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01085DE

## ADs that name it (0)

None.

## Approved models (3)

- 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))

## 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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Original Product 7\SH&HUWLILFDWH1XPEHU Make:

*See attached Federal Aviation Administration (FAA) Approved Models List (AML) SA01085DE for approved aircraft models and applicable airworthiness regulations SA01085DE Textron Aviation, Inc One Cessna Blvd Wichita, KS 67215 23 Title 14 Code of Federal Regulations * Installation of LinxUs Data Aquisition Unit in accordance with:

1. Master Drawing List, Doc No. MDL-TXT-001, LinxUs Legacy, Issue IR.1, FAA approved 12/28/2021, or later FAA approved revision, and

2. Instructions for Continued Airworthiness (ICA), Doc No. ICA-TXT-001, Issue IR.1, FAA accepted 12/28/2021, or later FAA accepted revision, are required to be made available at installation. No flight manual supplement is requried for this modification.

1. This STC is applicable to serial numbers as identifed in FAA AML SA01085DE.

Continued Page 3 of 3 July 20, 2021 2/15/2022, 3/22/2022 December 28, 2021 Ben Tyson Program Manager Wichita ACO Branch 3

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Too (Name and address of transferee):

Date oI transfer:

SA01085DE 3

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

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

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the LinxUs Legacy installation is as follows:

a. The type certification basis for parts not changed or not affected by the change are shown on the attached AML.

b. The certification basis for parts changed or affected by the change since the reference date of application, 7/20/2021 is based upon 14 CFR Part 23, effective February 1, 1965 plus Amendments 23-1 through 23-63. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be:

Regulations at latest amendment; None Regulations at an intermediate amendment; None 14 CFR Sections: 23.23 Amdt. 23-45; 23.25 Amdt. 23-50; 23.301(a) Amdt. 23-48; 23.303 Amdt. - ;

23.305(a,b) Amdt. 23-45; 23.307(a) Amdt. - ; 23.337(a)(1),(b)(1) Amdt. 23-48; 23.561(a)(b)(3) Amdt.

23-62; 23.601 Amdt. - ; 23.603 Amdt. 23-23; 23.605(a) Amdt. 23-23; 23.609(a) Amdt. - ; 23.611 Amdt.

23-48; 23.613(a-c) Amdt. 23-45; 23.619 Amdt. 23-7; 23.625(a-c) Amdt. 23-7; 23.853(a)(d)(3)(ii) Amdt.

23-62; 23.1301 Amdt. 23-62; 23.1309(a),(c) Amdt. 23-62; 23.1351(a)(1)(2)(b)(1)(i,ii,iii) Amdt. 23-49;

23.1357(a,c) Amdt. 23-43; 23.1359(c) Amdt. 23-49; 23.1365(a,b,d,e) Amdt. 23-49; 23.1365(d,e) Amdt.

23-49; 23.1431(a)(b) Amdt. 23-62; 23.1529(a,c,d,h) Amdt. 23-26 Regulations at the Original Aircraft Certification Basis amendment level per AML SA01085DE; None --- END --- 33

### SA01085DE_AML.pdf

FAA Approved Model List (AML) SA01085DE Textron Aviation, Inc Installation of LinxUs Data Acquisition Unit

Revision 2 (3/22/2022) Page 1 of 3

FAA Approved

Ben Tyson Program Manager Wichita ACO Branch

Reissue Date: _3/22/2022__

FAA Approved Model List (AML) SA01085DE Textron Aviation, Inc Installation of LinxUs Data Acquisition Unit

Revision 2 (3/22/2022) Page 2 of 3

AML Revision Log

Date Description FAA Approval 12/28/2021 Initial Release See cover page

2/15/2022 Reissue for transfer See cover page 3/22/2022 Reissue for transfer See cover page

FAA Approved Model List (AML) SA01085DE Textron Aviation, Inc Installation of LinxUs Data Acquisition Unit

Revision 2 (3/22/2022) Page 3 of 3

Item Make Model / Series Cert Basis / Amdt1 TCDS No. Inst Drawing2 FMS ICA3 Initial Approval Date Amended Date 1 Cessna 525, 525A, 525B 14 CFR Part 23, Amdt 23‐1 thru 23‐38 and 23‐40 A1WI Ref: Master Drawing List, MDL‐TXT‐001, Rev IR.1 dated 12/28/2021 None ICA‐TXT‐001, Rev IR.1 dated 12/28/2021 12/28/2021 ‐‐‐ 2 Cessna 525A 14 CFR Part 23, Amdt 23‐1 thru 23‐40 A1WI Ref: Master Drawing List, MDL‐TXT‐001, Rev IR.1 dated 12/28/2021 None ICA‐TXT‐001, Rev IR.1 dated 12/28/2021 12/28/2021 ‐‐‐ 3 Cessna 525B 14 CFR Part 23, Amdt 23‐1 thru 23‐54 A1WI Ref: Master Drawing List, MDL‐TXT‐001, Rev IR.1 dated 12/28/2021 None ICA‐TXT‐001, Rev IR.1 dated 12/28/2021 12/28/2021 ‐‐‐

‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ END ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐

1 See TCDS for additional Certification Basis Information 2 Or later FAA approved revision 3 Or later FAA accepted revision

## Every issue (2)

- March 22, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/52/68/5268e4edc315550fe066ab9ac3f527ee782ba895e6e230c778ca7638ce530c60), [SA01085DE_AML.pdf](https://openairdocs.org/files/sha256/87/ca/87ca64b5eff57bfe142c0a841ddb2c2ffbb0699b660c0d44efc1f361bc3cbdcc)
- March 15, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/57/33/573388b7f8c15e2e0a53758e9948fd2d60bf057f5499817026175ff99ab5ba93), [SA01085DE_AML.pdf](https://openairdocs.org/files/sha256/c9/4e/c94ec3cc990f308e0ccc0c5cac80e141509211962254f65766c46f6c895da606)

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