# STC SH4747NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: AEM USA Inc., United States
- Description: Fabrication and Installation of Electrical System Upgrade
- Applied: February 7, 1989
- Status date: April 16, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/64/f1/64f16ba6f2200715513d503975be77089a80700f57465e3dd8bad3c2326d53ec
- Approved model list and other attachments: [SH4747NM_AML_4-16-2026.pdf](https://openairdocs.org/files/sha256/ce/e0/cee0c7a89b1fd779390d6c8b19f508f1cc095a86153ec73e62166dd58201f3c1)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113554381420260803154857.0001
- DRS record last changed: August 3, 2026
- Page: https://openairdocs.org/stc/SH4747NM

## ADs that name it (2)

- [AD 2018-01-12](https://openairdocs.org/ad/2018-01-12) (historical): Main Hydraulic System · Airbus Helicopters AS-350B3. Effective Feb 20, 2018. Cited in the text
- [AD 2006-11-17](https://openairdocs.org/ad/2006-11-17): Geneva cyclic control sticks · Fabrication and Installation of Electrical System Upgrade (AEM USA STC SH4747NM). Effective Jul 7, 2006. Named in the applicability

## Approved models (8)

- Airbus Helicopters AS-350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350B3 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350C ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS-350D1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))

## 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.

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

---------------------END-------------------- 3 3 Add Page

### SH4747NM_AML_4-16-2026.pdf

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SH4747NM FOR**

INSTALLATION OF ELECTRICAL SYSTEM UPGRADE ISSUE DATE: August 1, 2013

Page 1 of 2

**ITEM ROTORCRAFT MAKE**

**ROTORCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**MODIFICATION**

**INSTALLED**

**FAA APPROVED**

**ROTORCRAFT FLIGHT**

**MANUAL SUPPLEMENT**

**INSTRUCTIONS FOR**

**CONTINUED**

AIRWORTHINESS AML REV DATE Number Revision* Number Revision**

1. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, and AS350B3 H9EU FAR 27 P122 Console on rotorcraft with

PRE-MOD AMS07-4280 configuration GA107-2 Revision N dated 3/04/2011 ICA107-2 Revision B dated 2/3/2015 5/26/15

2. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, and AS350B3 H9EU FAR 27 P132 Console on rotorcraft with

PRE-MOD AMS07-4280 configuration GA107-2-P132 Revision F dated 3/04/2011 ICA107-2 Revision B dated 2/3/20153 5/26/15

3. Airbus Helicopters AS350B2, and AS350B3

H9EU FAR 27 P122 Console on rotorcraft with

POST-MOD AMS07-4280 configuration GA107-13 Revision B dated 7/27/2013 ICA107-2 Revision B dated 2/3/2015 5/26/15

4. Airbus Helicopters AS350B2, and AS350B3

H9EU FAR 27 P132 Console on rotorcraft with

POST-MOD AMS07-4280 configuration GA107-13 Revision B dated 7/27/2013 ICA107-2 Revision B dated 2/3/2015 5/26/15

5. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, and AS350B3 H9EU FAR 27 Z2 Card Not Required Not Required ICA107-2 Revision B dated 2/3/2015 5/26/15

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SH4747NM FOR**

INSTALLATION OF ELECTRICAL SYSTEM UPGRADE ISSUE DATE: August 1, 2013

Page 2 of 2

**ITEM ROTORCRAFT MAKE**

**ROTORCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**MODIFICATION**

**INSTALLED**

**FAA APPROVED**

**ROTORCRAFT FLIGHT**

**MANUAL SUPPLEMENT**

**INSTRUCTIONS FOR**

**CONTINUED**

AIRWORTHINESS AML REV DATE Number Revision* Number Revision**

6. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, and AS350B3 H9EU FAR 27 P176 Dimmer Power Supply Not Required Not Required ICA107-5 Revision N/C dated 9/02/2010 9/29/14 * Or later FAA Approved Revision **Or later FAA Accepted Revision

FAA Approved:

for Manager, West Certification Branch AMENDED: September 29, 2014; May 26, 2015 REISSUED: May 20, 2022; April 16, 2026

## Every issue (9)

- April 16, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/64/f1/64f16ba6f2200715513d503975be77089a80700f57465e3dd8bad3c2326d53ec), [SH4747NM_AML_4-16-2026.pdf](https://openairdocs.org/files/sha256/ce/e0/cee0c7a89b1fd779390d6c8b19f508f1cc095a86153ec73e62166dd58201f3c1)
- May 20, 2022: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/14/cb/14cb33d51f44aead30a5b950f724473486faedbe05d653832f5ba8384bea6207), [AML SH4747NM.pdf](https://openairdocs.org/files/sha256/40/07/4007f5a0831828943927be9e8316e322a3a000fc465c3ba6eb5aedb830d12c6c)
- November 16, 2018: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/13/6f/136f627d4104252d735f580d834184e373b128aa87fae7e8d631e5845c16f00b), [SH4747NM_AML.pdf](https://openairdocs.org/files/sha256/2e/91/2e914ff3fb0fd5cca77f71886c5eeef650f201c7c37caa632ae5875a8402a98e)
- October 28, 2015: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f0/bb/f0bb2ad9c9aca02fffbb2d66a42a5db80996b87ff8f12ba42370eff62a12b835), [SH4747NM_AML.pdf](https://openairdocs.org/files/sha256/2e/91/2e914ff3fb0fd5cca77f71886c5eeef650f201c7c37caa632ae5875a8402a98e)
- May 6, 2015: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a6/81/a681645e9f407619f293decfccf949444c17158c730793b567708fb97436ebd8), [SH4747NM_AML.pdf](https://openairdocs.org/files/sha256/2e/91/2e914ff3fb0fd5cca77f71886c5eeef650f201c7c37caa632ae5875a8402a98e)
- September 29, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/a6/81/a681645e9f407619f293decfccf949444c17158c730793b567708fb97436ebd8), [SH4747NM_AML.pdf](https://openairdocs.org/files/sha256/1d/18/1d1819e711c1b60fcde153c22554888600e2285ef8dc3efd09ccec0a01d557df)
- August 1, 2013: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/08/63/0863bd9d5c1f770be07013624be7718b108e2f331f7c528e6b5e4ae791cf8c99), [SH4747NM_AML.pdf](https://openairdocs.org/files/sha256/cb/56/cb562c62029e2cf38d3cb20d1c34c663cfc2f114a343de22a95f98438f12c36d)
- August 8, 2008: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/9c/1d/9c1d02fb6174aca531ed31e54e2709030aaed9e7b36a3a921fe079653575c7c2)
- August 27, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/a9/0c/a90c09dfe71721e48f6dc057d53d676c1e6c9a44792c4e0b0773ef112ceea73c)

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