# STC SH3525SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Apical Industries, Inc. dba Dart Aerospace, United States
- Description: Installation of a wet torque indication system.
- Applied: August 6, 1985
- Status date: August 19, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H11EU](https://openairdocs.org/tcds/H11EU)
- Certificate PDF: https://openairdocs.org/files/sha256/17/b1/17b12f5f40de0c52f22d355ce902989d49aec588a1d63bcb5beb6910e314bc34
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/33767DB514CA0FDD86257D6900698193.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH3525SW

## ADs that name it (0)

None.

## Approved models (3)

- Airbus Helicopters AS355E ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355F ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355F1 ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))

## 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.

This Certificate issued to APICAL INDUSTRIES, INC.

D/B/A DART AEROSPACE 3030 ENTERPRISE COURT, SUITE A VISTA, CALIFORNIA 92018 Part 27 of the Federal Aviation Regulations.

H11EU Aerospatiale AS-355E, AS-355F, AS-355F1 Description of Type Design Cha nge: Installation of wet torque indication system in accordance with ERA Drawing ERA-85-35577-100, Revision A, and Installation Instructions ERA-85-35577-105, dated October 16, 1985, or later FAA approved revisions.

Limitations and Conditions: 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 shall give the other person written evidence of that permission.

Date of application : August 6, 1985

Date of issuance : October 31, 1985

Date reissued : 12/28/88, 5/20/05, 12/29/06, 8/19/14

(Signature) Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office (Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

Number

## Every issue (3)

- August 19, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/17/b1/17b12f5f40de0c52f22d355ce902989d49aec588a1d63bcb5beb6910e314bc34)
- December 29, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/16/e2/16e247ecfefed3bacd44e4416415d8784b9aed58b5fb99dd0d252b20e7523ce6)
- May 20, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/7b/d6/7bd6823f3b4d7d83eae0fce718eb75d89994fd295769bb04882f14eb9f01ea75)

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