# STC SR11922AC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Liberty Partners Inc., United States
- Description: Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs)
- Applied: May 22, 2020
- Status date: March 6, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/7a/cf/7acf8ebae0a9047912ff0c2d9b446c601a183b4abe1dc857d6b521bc31d057d6
- Approved model list and other attachments: [SR11922AC_AML.pdf](https://openairdocs.org/files/sha256/1c/7d/1c7d06db4825e8ef7335cc8d628fbedda49540fdfab2a7d764449dbec669e9fa)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID102741672320260106163504.0001
- DRS record last changed: January 6, 2026
- Page: https://openairdocs.org/stc/SR11922AC

## ADs that name it (0)

None.

## Approved models (1)

- Bell Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: _SR11922AC This certificate issued to:

FAA 8110-2 (10/24) Page 1 of _3__ Report: LP2901-AML0001, for approved models, applicable AFMS and applicable airworthiness regulations See Approved Model List (AML) see continuation sheet for additional description see continuation sheet for additional limitations and conditions Liberty Partners Inc.

812 West 9th Street Okmulgee, OK 74447 29 of the Federal Aviation Regulations.

Demonstration of aircraft critical equipment and antenna systems tolerance of radio frequency interference (RFI) from intentional or spurious transmissions from certain Portable Electronic Devices (PEDs) in accordance with master drawing list LP2901-DL001, revision B, dated January 31, 2025, or later approved FAA revision.

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 the product, the holder shall give the other person written evidence of that permission.

May 22, 2020 March 6, 2025 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service see continuation sheet for additional dates

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: _SR11922AC Effective Date: 03/06/2025

_Number: _SR11922AC___

Also required is one of the following airplane flight manual supplements, document LP2901-FM001 revision IR, LP2901-FM002 revision IR, LP2901-FM003 revision IR, LP2901-FM011 revision IR, LP2901-FM012 revision IR, or LP2901-FM013 revision IR, or later FAA approved revision.

This STC does not constitute installation approval of a wireless radio frequency system using wireless data technologies. It only provides data that may partially support its installation or its activation.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101(b)(1), and FAA Order 8110.48, the certification basis is per the Approved Model List (AML) Type Certificate Data Sheets(TCDS) plus the following:

14 CFR § 29.1309 (a)(d), Amendment 29-59 14 CFR § 29.1529, Amendment 29-20 14 CFR § 29.1581 (a)(2), Amendment 29-15 14 CFR § 29.1583 (e), Amendment 29-24 -----------------------------------------------------------END----------------------------------------------------------------------

### SR11922AC_AML.pdf

APPROVED MODEL LIST ©Copyright LIBERTY PARTNERS, INC. (2013-2024). This document is not releasable under the Freedom of Information Act. CONFIDENTIAL Proprietary Data. LIBERTY PARTNERS, INC. reserves all proprietary rights in the confidential data furnished herein. Use of this document is restricted to conveyance of information on a need-toknow basis to customers or vendors of LIBERTY PARTNERS, INC. This information shall not be released, disclosed, used or duplicated for procurement or manufacturing purposes or any other reason without the written permission of LIBERTY PARTNERS, INC. By accepting receipt and possession of this document, you acknowledge and agree to these regulations.

Report: LP2901-AML0001 Rev: IR

APPROVED MODEL LIST Demonstration of Rotorcraft Tolerance of Radio Frequency Interference from Certain Transmitting Portable Electronic Devices FAA STC Number ___________ FAA Approved:

for Paul Nguyen Manager, Central Certification Branch Compliance & Airowthiness Division Aircraft Certification Service SR11922AC

APPROVED MODEL LIST Page 2 of 4 ©Copyright LIBERTY PARTNERS, INC. (2013-2024). LIBERTY PARTNERS, INC. Copyright and CONFIDENTIAL Proprietary Information--Use or disclosure of this data subject to restrictive legend on title page.

Report: LP2901-AML0001 Rev: IR

AML REVISION LOG Revision Level Pages/ Sections Affected Description of Changes FAA Approval Approved Date IR All Initial Release. See cover page

APPROVED MODEL LIST Page 3 of 4 ©Copyright LIBERTY PARTNERS, INC. (2013-2024). LIBERTY PARTNERS, INC. Copyright and CONFIDENTIAL Proprietary Information--Use or disclosure of this data subject to restrictive legend on title page.

Report: LP2901-AML0001 Rev: IR

1. INTRODUCTION This document is the FAA Approved Model List for STC Number __________ for the Demonstration of Rotorcraft Tolerance to Radio Frequency Interference from Certain Portable Electronic Devices (PED) in eligible rotorcraft.

Revision to this AML requires FAA approval.

2. STC CONFIGURATION AML STC __________ shall be applied to a rotorcraft selectively based on the type of testing/evaluation performed and the type(s) of PED’s covered. Each combination of testing type and PED’s covered is identified by an STC Configuration, as follows:

Typical STC Configuration X## In this example “X” stands for: Type(s) of testing/evaluation performed In this example “##” stands for: Type(s) of PED’s covered STC Configurations are fully defined in the STC MDL. Each AML STC Configuration requires that a specific Rotorcraft Flight Manual Supplement (RFMS) be applied.

Table 2.a: AML STC Configuration Options and their corresponding RFMS STC Configuration (Corresponding AFMS) Phases of Flight Non-Critical Phases only (A)(2) All Phases of Flight (B) PED(1) Combination 01 WiFi & Bluetooth A01 (LP2901-FM001) B01 (LP2901-FM011) 02 WiFi, Bluetooth, & Cellular A02 (LP2901-FM002) B02 (LP2901-FM012) 03 WiFi, Bluetooth, Cellular, plus customer specified PED’s A03 (LP2901-FM003) B03 (LP2901-FM013)

(1) As defined in STC MDL.

(2) Critical Phases of Flight – Rotorcraft: Critical phases of flight include taxiing, hovering, takeoff, final approach, missed approach, the landing and any other phases of flight as determined by the pilot-in-command or commander.

SR11922AC SR11922AC

APPROVED MODEL LIST Page 4 of 4 ©Copyright LIBERTY PARTNERS, INC. (2013-2024). LIBERTY PARTNERS, INC. Copyright and CONFIDENTIAL Proprietary Information--Use or disclosure of this data subject to restrictive legend on title page.

Report: LP2901-AML0001 Rev: IR

3. APPROVED MODEL LIST Rotorcraft Make Rotorcraft Model(s) TCDS No./Cert Basis(1) Additional Approved Data(2) Remarks Amendment Date Bell Textron Inc. 212 TCDS H4SW LP6919-EL001, Approved Equipment List LP6919-EL002, Approved Equipment List AFMS defined by Table

2.a.

None Original Issue End of List

(1) Specific regulations met for all models are the latest amendments at the time of the STC Issue, 14 CFR 29.1(a)(g) Amdt. 29-39, 29.1309(a)(d) Amdt. 29-59, 14 CFR 29.1529 Amdt. 29-20, 14 CFR 29.1581(a)(2) Amdt. 29-15, and 14 CFR 29.1583(e) Amdt. 29-24.

(2) The Instructions for Continued Airworthiness LP2901-CA001 is included for all models listed.

## Every issue (1)

- March 6, 2025: Issued, Current. [certificate](https://openairdocs.org/files/sha256/7a/cf/7acf8ebae0a9047912ff0c2d9b446c601a183b4abe1dc857d6b521bc31d057d6), [SR11922AC_AML.pdf](https://openairdocs.org/files/sha256/1c/7d/1c7d06db4825e8ef7335cc8d628fbedda49540fdfab2a7d764449dbec669e9fa)

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