STC SH4747NM

Supplemental type certificate · AEM USA Inc.

Holder
AEM USA Inc. · United States
Status
Current · Reissued
Status date
April 16, 2026
Applied
February 7, 1989
Product
Aircraft · Rotorcraft
Certification basis
Part 27
Data sheet
TCDSH9EU

From FAA DRS, with our copy of the certificate PDF. DRS record last changed August 3, 2026.

What it approves

Fabrication and Installation of Electrical System Upgrade

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

SH4747NM AEM USA, Inc.

5441 S. Macadam Ave # 5932 Portland, OR 97239 * * * *See attached Federal Aviation Administration (FAA) Approved Model List (AML) SH4747NM for approved aircraft models and applicable airworthiness regulations.

Approval of this change in type design applies to the rotorcraft models listed on AML SH4747NM only. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate, the AML, the MDL, and the applicable Installation Manual, Rotorcraft Flight Manual Supplement, and ICA, as listed on AML SH4747NM, must be maintained as part of the permanent records for the modified aircraft.

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.

02/07/1989 09/29/2014 10/28/2015 11/16/2018 07/26/1989 01/18/1991 07/01/1993 08/04/1995 ✔ for Manager, West Certification Branch 3 Fabrication and Installation of Electrical System Upgrade in accordance with Geneva Aviation Master Drawing List (MDL) GA107, Revision Q, dated February 12, 2013, or later FAA approved revision. Maintained in accordance with the approporate Geneva Aviation Instructions for Continued Airworthiness (ICA) as listed on AML SH4747NM or later FAA-accepted revision.

SH4747NM 04/16/2026 3

SH4747NM 04/16/2026 Date Reissued: 5/20/2022; 4/16/2026 Date Amended: 3/29/1999; 4/16/1999; 7/7/2000; 5/15/2003; 1/29/2004; 4/19/2004; 8/27/2004;

8/08/2008; 8/1/2013

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ADs that name this STC · 2

An AD can apply because an STC is installed, or mention one in its text.

Approved models · 8

MakeModelData sheet
Airbus HelicoptersAS-350BH9EU
Airbus HelicoptersAS-350B1H9EU
Airbus HelicoptersAS-350B2H9EU
Airbus HelicoptersAS-350B3H9EU
Airbus HelicoptersAS-350BAH9EU
Airbus HelicoptersAS-350CH9EU
Airbus HelicoptersAS-350DH9EU
Airbus HelicoptersAS-350D1H9EU

Every issue · 9

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
April 16, 2026Reissued, currentCertificateApproved model list
May 20, 2022Reissued, earlier issueCertificateApproved model list
November 16, 2018Reissued, earlier issueCertificateApproved model list
October 28, 2015Reissued, earlier issueCertificateApproved model list
May 6, 2015Amended, earlier issueCertificateApproved model list
September 29, 2014Reissued, earlier issueCertificateApproved model list
August 1, 2013Amended, earlier issueCertificateApproved model list
August 8, 2008Amended, earlier issueCertificate
August 27, 2004Amended, earlier issueCertificate