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
Every issue · 9
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| April 16, 2026 | Reissued, current | CertificateApproved model list |
| May 20, 2022 | Reissued, earlier issue | CertificateApproved model list |
| November 16, 2018 | Reissued, earlier issue | CertificateApproved model list |
| October 28, 2015 | Reissued, earlier issue | CertificateApproved model list |
| May 6, 2015 | Amended, earlier issue | CertificateApproved model list |
| September 29, 2014 | Reissued, earlier issue | CertificateApproved model list |
| August 1, 2013 | Amended, earlier issue | CertificateApproved model list |
| August 8, 2008 | Amended, earlier issue | Certificate |
| August 27, 2004 | Amended, earlier issue | Certificate |