# STC SR09637RC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Cool City Electronics, Inc. dba Cool City Avionics, United States
- Description: Installation of a Force Trim system
- Applied: September 12, 2012
- Status date: August 13, 2013
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H11NM](https://openairdocs.org/tcds/H11NM)
- Certificate PDF: https://openairdocs.org/files/sha256/65/3d/653d8a004e56d88c4ca5a8be02798a6854dcad6c0b13fb12f8de0d6a5896430d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/712FD4A1A5D9AE7286257BCE006F7859.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR09637RC

## 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.

United States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate GH:O:WP\STC\Cool City Electronics\SR09637RC.xml

FAA FORM 8110-2(10-68) PAGE 1 of 2 PAGES Number: SR09637RC This certificate issued to Cool City Electronics, Inc. dba Cool City Avionics 6300 Columbia Street Mineral Wells, TX 76067 Part 27 of the Federal Aviation Regulations.

Original Product – Type Certificate Number : H11NM

Make: Robinson Helicopter Company Model: R44 and R44 II.

Installation of a Force Trim system in accordance with Master Drawing List Force Trim FT100 Installed in Robinson Model R44 (with Hydaulic System) and R44II Raven Helicopter, Document Number 6410-0004, Revision E, dated 4/25/2013, or later FAA approved revision. Rotorcraft Flight Manual Supplement, Document Number 6565-0007, Revision -, dated 5/22/2013, or later FAA approved revision is required with this installation. Cool City Electronics Instructions for Continued Airworthiness, Document Number 6530-0006, Revision A, dated 12/18/2012, or later revision is required.

1) Compatibility of this design change with previously approved modifications must be determined by the installer.

2) A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

3) 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.

Date of application: September 12, 2012 Date reissued:

Date of issuance: August 13, 2013 Date amended:

(Signature) Scott A. Horn, Acting Manager Rotorcraft Certification Office Southwest Region (Title)

Project #: ST03471RC-R PE: GH ASW-170

## Every issue (1)

- August 13, 2013: Issued, Current. [certificate](https://openairdocs.org/files/sha256/65/3d/653d8a004e56d88c4ca5a8be02798a6854dcad6c0b13fb12f8de0d6a5896430d)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.