# STC SA04176NY

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Skyway Group Inc, United States
- Description: Installation of Cabin Entry Step Assembly
- Applied: April 9, 2019
- Status date: May 20, 2019
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A27CE](https://openairdocs.org/tcds/A27CE)
- Certificate PDF: https://openairdocs.org/files/sha256/e9/64/e9645b884abd4f03aa9e3c9627712bd41f80d5409fcea6250dfce62e8af83a37
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/167A18E783AB9D89862585CB003B267A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA04176NY

## ADs that name it (0)

None.

## Approved models (2)

- Textron Aviation Inc. 501 ([TCDS A27CE](https://openairdocs.org/tcds/A27CE))
- Textron Aviation Inc. 551 ([TCDS A27CE](https://openairdocs.org/tcds/A27CE))

## 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 (5/14) Page 1 of 3

Number: SA04176NY

Parts 23 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: A27CE Make: Textron Aviation Inc.

Model: 501, 551

Installation of Cabin Entry Step Assembly on Textron Aviation, Inc., Models 501 and 551 aircraft in accordance with Aerospace Design & Compliance, LLC. (1) Master Data List C551-MDL-0041, Rev IR, dated 4/16/2019, or later FAA approved revision. (2) Instructions for Continued Airworthiness (ICA) C551-ICA-0041, Rev IR, dated 4/10/2019, or later FAA accepted revision. The ICA and its contents must be incorporated into the operator’s maintenance program.

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

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

Certification Basis:

Date of Application: April 9, 2019 Date Reissued: May 20, 2019 Date of Issuance: April 16, 2019 Date Amended:

Signature

Title Jim Grigg Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service Skyway Group, Inc.

122 Howard Langford Drive Uvalde, TX 78801

FAA Form 8110-2 (5/14) Page 3 of 3

FAA Form 8110-2 (5/14) Page 3 of 3

Transfer the ownership of Supplemental Type Certificate Number: SA04176NY

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA04176NY

FAA Form 8110-2 (5/14) Page 3 of 3

Date of Issuance: April 16, 2019 Date of Reissuance: May 20, 2019

Certification Basis (Continued):

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 Textron Aircraft Inc., models 501 and 551 is as follows:

(1) The type certification basis for the Textron Aircraft Inc., models 501 and 551 airplane is shown on TCDS A27CE for parts not changed or not affected by the change.

(2) The certification basis for parts changed or affected by the change since the reference date of application April 9, 2019, is based upon Part 23 as amended by Amendment 23-16 with the exception of those above amendment 23-16 listed below.

Regulations at later amendment than 23-16:

23.29 amdt 23-21 (Model 501 only)

25.29 amdt 25-0 (Model 551 only)

23.301(a)(b) amdt 23-48

23.305 amdt 23-45

23.321(a) amdt 23-45

23.341 amdt 23-48

23.561(a)(b)(c) amdt 23-48

23.603 amdt 23-23

23.605(a) amdt 23-23

23.607(b)(c) amdt 23-48

23.611 amdt 23-48

23.613(a)(b)(c) amdt 23-45

23.621(d) amdt 23-45

23.811(c)(1) amdt 23-46

23.853(a) amdt 23-49

23.1301(a)(b)(c)(d) amdt 23-20

23.1309(a)(3) amdt 23-49 (Model 501 only)

25.1309(b) amdt 25-23 (Model 551 only)

23.1353(c)(4) amdt 23-49

23.1359(c) amdt 23-49

23.1529 amdt 23-26

-END-

## Every issue (1)

- May 20, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e9/64/e9645b884abd4f03aa9e3c9627712bd41f80d5409fcea6250dfce62e8af83a37)

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