# STC SA01879WI

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Delta Engineering Corporation, United States
- Description: Installation of the Satcom Direct WiFi Hub 2.0 on the Textron Aviation Inc. Model 525B
- Applied: May 22, 2018
- Status date: October 12, 2022
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- Certificate PDF: https://openairdocs.org/files/sha256/75/53/7553f2f39691bb46c5b384980b45d96d2b42854f879819180b317d055abde2db
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157842115620230905180452.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA01879WI

## ADs that name it (0)

None.

## Approved models (1)

- 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.

SA01879WI Delta Engineering Corporation 13 DRBA Way New Castle, DE 19720 Part 23 Title 14 Code of Federal Regulations A1WI Textron Aviation Inc.

525B Installation of the Satcom Direct WiFi Hub 2.0 on the Textron Aviation Inc. Model 525B. Data required:

1) 3S Certification Master Data List (MDL) 3S18-002-1001, Revision IR, Dated: 06/29/2018 or later FAA approved revisions.

2) 3S Certification Instructions for Continued Airworthiness (ICA) 3S18-002-6101, Revision IR, Dated:

06/29/2018 or later FAA accepted revisions.

1) Compatibility of this design change with previously approved modifications must be determined by the installer.

(See Limitations and Conditions Continued on Page 3 of 4) May 22, 2018 September 21, 2018, October 12, 2022 June 29, 2018 Christina M. Underwood Manager, East Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 4

SA01879WI 4

SA01879WI Date Reissued: October 12, 2022

2) Prior installation and approval of prerequisite STCs as stated in the ICA, Section 5.3

- Table 5, must be accomplished.

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

4) Approval of this change in type design applies to the above model of airplane only.

5) A copy of this certificate and the ICA shall be maintained in the airplane permanent records.

Certification Basis:

Based on 14 CFR §21.115 and §21.101, and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the Textron Aviation Inc. Model 525B Satcom Direct WiFi Hub 2.0 Installation is as follows:

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

b. The certification basis for parts changed or affected by the change since the reference date of the application, 05/22/2018, is based upon 14 CFR Part 23 as amended by Amendment 23-54. Based on 14 CFR 21.21.115 and 21.101, and the FAA policy for significant changes in the FAA Order 8110.48A, the certification basis for this modification was determined to be:

Regulations at the latest amendment 23-0 through 23-62:

None

Regulations at the amendment level in TCDS A1WI:

23.29(b) [Amdt. 23-21], 23.301 [Amdt. 23-48], 23.303 [Amdt. Original], 23.305 [Amdt.

(Certification Basis Continued on Page 4 of 4) 3 4

SA01879WI Date Reissued: October 12, 2022

Certification Basis (continued):

23-45], 23.307(a) [Amdt. Original], 23.561(b)(3)(e) [Amdt. 23-48], 23.601 [Amdt.

Original], 23.603 [Amdt. 23-23], 23.605(a) [Amdt. 23-23], 23.607 [Amdt. 23-48],

23.609(a) [Amdt. Original], 23.611 [Amdt. 23-48], 23.613 [Amdt. 23-45], 23.625 [Amdt.

23-7], 23.627 [Amdt. Original], 23.853(a)[Amdt. 23-49], 23.1301(a)(b)(c)(d) [Amdt.

23-20], 23.1307(b)(3) [Amdt. 23-43], 23.1309(a)(1)(4)(b) [Amdt. 23-49], 23.1351 (a)(1)

(2)(ii) [Amdt. 23-49], 23.1359(c) [Amdt. 23-49], 23.1431(b) [Amdt. 23-49], 23.1529 [Amdt. 23-26].

Regulations at an intermediate amendment:

None

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

----------------------------------------END-------------------------------------- 4 4

## Every issue (3)

- October 12, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/75/53/7553f2f39691bb46c5b384980b45d96d2b42854f879819180b317d055abde2db)
- September 21, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/76/a8/76a8db355babd03a92b832e20d5ba0f49737f14f92b725321dd723d2a8ebf668)
- June 29, 2018: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/75/fb/75fb9f6dfcceebc964a8ed4555243f1a3894df26c8ecdee23c1c7a6c0065f5f5)

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