# STC SR02420AK

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Gyro-Stabilized Systems LLC, United States
- Description: Installation of the ZW Aviation LLC R44M-001 Utility Camera Mount
- Applied: June 7, 2013
- Status date: August 22, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H11NM](https://openairdocs.org/tcds/H11NM)
- Certificate PDF: https://openairdocs.org/files/sha256/5d/bf/5dbf39cddc9eb4e5206d28e5a0931570532ed68fc0917bd38c9aa3bd171f3f0c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187599354720251223160004.0001
- DRS record last changed: December 23, 2025
- Page: https://openairdocs.org/stc/SR02420AK

## ADs that name it (0)

None.

## Approved models (2)

- Robinson Helicopter Company R44 ([TCDS H11NM](https://openairdocs.org/tcds/H11NM))
- Robinson Helicopter Company R44 II ([TCDS H11NM](https://openairdocs.org/tcds/H11NM))

## 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.

SR02420AK Gyro-Stabilized Systems, LLC 400 Crown Point Circle Grass Valley, CA 95945 Part 27 Title 14 CFR H11NM Robinson Helicopter Company R44, R44 II

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 this Certificate to alter the product, the holder shall give the other person written evidence of that permission.

3. Instructions for Continued Airworthiness (ICA) ZW Aviation, LLC (Gyro-Stabilized Systems, LLC), Document Number R44M-008, Revision 1, dated August 4, 2013, or later FAA accepted revision must be made available to the operator at the time of installation.

(Limitations and Conditions continued on page 3 of 3) 06/07/2013 01/14/2014 08/26/2019 07/02/2025 09/25/2013 03/31/2016 07/21/2022 ✔ for Manager, West Certification Branch 3 Installation of the ZW Aviation, LLC (Gyro-Stabilized Systems, LLC) R44M-001 Utility Camera Mount in accordance with ZW Aviation, LLC (Gyro-Stabilized Systems, LLC) "Master Drawing List" R44M-110, Revision IR, dated September 4, 2013, or later FAA approved revision and Rotorcraft Flight Manual Supplement (RFMS), ZW Aviation, LLC (Gyro Stabilized Systems, LLC), Document Number R44M-107, Revision IR, dated September 25, 2013, or later FAA approved revision.

SR02420AK 3

SR02420AK Date reissued: 8/22/2025 Date amended:

4. The equipment for which these provisions are intended has been certified. Additional FAA approval is required for the installation of this equipment and must be evaluated to assure satisfactory compliance with the applicable airworthiness standards.

Certification Basis:

Basis on Title 14 Code of Federal Regulations Part 27, dated February 1, 1965, as amended by Amendments 27-1 through 27-24, and Exemption Number 6692, dated October 17, 1997.

------------------------------------End----------------------------------- 3 3 Add Page

## Every issue (6)

- August 22, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5d/bf/5dbf39cddc9eb4e5206d28e5a0931570532ed68fc0917bd38c9aa3bd171f3f0c)
- July 2, 2025: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/46/87/468758ef0a3f4674d35b3067d1b355d9c7343cf17c8712529045cb89e6898981)
- July 21, 2022: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/8a/6a/8a6a82f4ddde5f026c7846ed68eb70e3450898357c166d4cbfb918b51ef28144)
- August 26, 2019: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/b1/6d/b16d46971cb859ef951a28a95d68ee170f61ef8d082e3e336666271620057254)
- March 31, 2016: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/63/b5/63b5db9d3b3517ad4fe4584f7a2b7022ee9d1dd9f734e054946fd88b0df11598)
- September 25, 2013: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/4b/3e/4b3e10ea085120882bdf4157ad27a273b9491e02364a9b8b79e06a8df71a4b6d)

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