# STC SR03641AT

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Tech-Tool Plastics Inc., United States
- Description: Replace the existing Eurocopter EC120-B windows with Tech-Tool Plastics, Inc. replacement windows
- Applied: March 28, 2005
- Status date: May 1, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS R0001RD](https://openairdocs.org/tcds/R0001RD)
- Certificate PDF: https://openairdocs.org/files/sha256/be/f2/bef2e6f84111ca55973188b588d633b7cc78b49cec2ba50ea34b2e33d58528d3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160960056420250523173121.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR03641AT

## ADs that name it (0)

None.

## Approved models (1)

- Airbus Helicopters EC120B ([TCDS R0001RD](https://openairdocs.org/tcds/R0001RD))

## 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.

SR03641AT Tech-Tool Plastics, Inc.

7800 Skyline Park Drive Fort Worth, TX 76108 Part 27 the Federal Aviation Regulations R0001RD Eurocopter EC120 B "Eurocopter EC120-B Maintenance and Repair Manual, is also required part of this STC, and must be incorporated into the operator's maintenance program.

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.

03/28/2005 06/30/2011 05/01/2025 11/18/2008 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 2 Replace the existing Eurocopter EC120-B windows with Tech-Tool Plastics, Inc. replacement windows which are essentially the same as the OEM windows with regard to size, shape and installation in accordance with Tech-Tool Plastics, Inc. Master Drawing List (MDL), EC120/130-2000-100, Revision C dated October 31, 2009, or later FAA approved revision.

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

SR03641AT 05/01/2025 2

## Every issue (2)

- May 1, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/be/f2/bef2e6f84111ca55973188b588d633b7cc78b49cec2ba50ea34b2e33d58528d3)
- June 30, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/bc/9d/bc9de3979d6275f10a44a3a937747b1d7166b40699bc5c4b2f67e9e278305f8e)

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