# STC SA04619CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apcela IFC JV, LLC dba Apcela ATG, United States
- Description: INSTALL SMARTSKY LITE SYSTEM
- Applied: March 28, 2023
- Status date: November 5, 2025
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI)
- Certificate PDF: https://openairdocs.org/files/sha256/45/23/45237321771e4cbef14c1b6668855f7c3bd32da10bdea7e9800b0354cf909dae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176339654720260123161013.0001
- DRS record last changed: January 23, 2026
- Page: https://openairdocs.org/stc/SA04619CH

## 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.

SA04619CH Apcela IFC JV, LLC dba Apcela ATG 1900 Reston Metro Plaza, Suite 615 Reston, VA 20190 Part 23 the Title 14, Code of Federal Regulations A1WI Textron Aviation Inc.

525, 525A, 525B, 525C

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

(See Continuation Sheet 3 of 4) 03/28/2023 11/05/2025 07/18/2024 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 4 Installation of a SmartSky LITE System on a Textron Aviation Inc. 525, 525A, 525B, 525C Aircraft with FAA Approved Master Data List LP6137-1002 Revision (C), dated June 26, 2024, or later FAA/ODA Approved Revision.

FAA 8110-2 ( 10/24) Page 2 of __

SA04619CH 11/05/2025 4

SA04619CH 11/05/2025 Description of Type Design Change (Continued):

FAA Approved Airplane Flight Manual Supplement document number LP6137-2007 Revision (A), dated June 27, 2024, or later FAA/ODA Approved revision is a required part of this modification.

The aircraft must be maintained in accordance with FAA accepted Instructions for Continued Airworthiness, Report No. LP6137-2006 Revision (B), dated June 25, 2024, or later FAA/ODA Approved revision in addition to the basic airplane maintenance manuals.

2. 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.

3. This STC is applicable to all serial numbers for these Make-Models.

4. The installer must ensure TPED tolerance of aircraft. This may require prior or concurrent embodiment of a TPED STC or Service Bulletin.

Certification Basis:

Based on 14 CFR §§21.101, 21.115 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for Textron Aviation Inc. 525, 525A, 525B, 525C Installation of a SmartSky LITE System is as follows:

a. The type certification basis for the Textron Aviation Inc. 525, 525A, 525B, 525C is shown on TCDS 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 application, March 28, 2023, is based upon TCDS A1WI. Based on 14 CFR §21.101, 21.115 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for this modification was determined to be:

SA04619CH 11/05/2025 Certification Basis (Continued):

Regulations at the amendment level in TCDS A1WI:

23.1(a,b)[23-34], 23.251(-)[23-45], 23.301(a,b)[23-48], 23.303(-)[Initial], 23.305(a,b)[23-45],

23.307(a)[Initial], 23.365(a,b,d)[Initial], 23.561(a,b,c)[23-48], 23.571(c)[23-48], 23.573(b) [23-48], 23.574(a)[23-48], 23.575(-)[23-48], 23.601(-)[Initial], 23.603(a,b)[23-23], 23.605(a) [23-23], 23.607(a,b,c)[23-48], 23.609(a,b)[Initial], 23.611(-)[23-48], 23.613(a,b,d)[23-45],

23.619(-)[23-7], 23.625(a,b,c)[23-7], 23.627(-)[Initial], 23.853(a,d(3)(i)(v))[23-49], 23.1301 (a,b,c,d)[23-20], 23.1309(a)[23-62], 23.1322(c,d)[23-43], 23.1351(a)[23-49], 23.1357(a,c) [23-43], 23.1359(c)[23-49], 23.1365(a,b,c,d,e)[23-49], 23.1367(a,b,c,d)[Initial], 23.1419(a) [23-43], 23.1431(a,b)[23-62], 23.1501(a,b)[23-21], 23.1519(-)[Initial], 23.1529(-)[23-26],

23.1555(a)[23-50], 23.1581(a,b,c,f)[23-50].

Special Condition 23-102-SC, 23-145-SC.

-END- 4 4

## Every issue (2)

- November 5, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/45/23/45237321771e4cbef14c1b6668855f7c3bd32da10bdea7e9800b0354cf909dae)
- July 18, 2024: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/9c/b5/9cb5f4f27c2a2ba89a39b7e8f5aecaa450b9704d85d841fded671cd816ac0bc7)

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