# STC ST10679SC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: L2 Aviation, United States
- Description: Installation of electrical provisions for a Class 2B Teledyne Controls triple Electronic Flight Bag (EFB) system, Wingspeed XLLink/Iridium Communication System with Telephone Handset, Network Server Unit, and Ritec Rugged Inc.
- Applied: June 15, 2007
- Status date: May 12, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 25
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/bb/33/bb3341672241b06a17d91202b60900b5a41bd8589fca18d6da9f53f87b446a9e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179171147120250625151459.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST10679SC

## ADs that name it (0)

None.

## Approved models (3)

- The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200C Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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.

ST10679SC L2 Aviation 2100 E Hwy 290 Dripping Springs, TX 78620 Part 25 the Federal Aviation Regulations A20WE The Boeing Company 747-200B, -200C, -200F The installer must determine whether this design change is compatible with previously approved modifications. 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.

(See Continuation Sheet 3 of 3) 06/15/2007 06/12/2025 05/12/2008 09/01/2010 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of electrical provisions for a Class 2B Teledyne Controls triple Electronic Flight Bag (EFB) system, Wingspeed XLLink/Iridium Communication System with Telephone Handset, Network Server Unit, and Ritec Rugged Inc. Printer in accordance with Maser Drawing List 2325-B25-MDL, Revision F-1, dated May 8, 2008, or later FAA approved revision. Airplane Flight Manual Supplement 2325-B25-AFM, Revision IR, dated April 16, 2008, or later FAA approved revision is required.

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

ST10679SC 06/12/2025 3

ST10679SC 06/12/2025 Limitations and Conditions (Continued):

This modification installs provisions to support the installation and activation of an Electronic Flight Bag which may contain a lithium battery system. The FAA has certified the structural and connectivity aspects of this modification but not the functionality for which these provisions are intended or the maintenance that may be required for a system with lithium batteries. A Flight Standards evaluation is required to consider operational and maintenance requirements of the Electronic Flight Bag and the lithium battery system.

NOTE: The FAA has reviewed the applicant's assessment showing that this modification does not impact the existing electrical wiring interconnection system instructions for continued airworthiness (EWIS ICA) and found that no additional EWIS ICA tasks are required.

Certification Basis:

The Certification Basis for this installation is per Type Certificate Data Sheet A20WE, plus

25.981 amendment 25-102 and 26.11(c) amendment 26-0.

-END- 3 3

## Every issue (2)

- May 12, 2008: Issued, Current. [certificate](https://openairdocs.org/files/sha256/bb/33/bb3341672241b06a17d91202b60900b5a41bd8589fca18d6da9f53f87b446a9e)
- May 12, 2008: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/b4/bf/b4bf810c19a9b16ee68631ab3baf0d6494b31caaba79c016db8414051db60a8b)

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