# STC SH4173NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Simplex Manufacturing Company, United States
- Description: Installation of Simplex Model 7600 modular electrical system. (US ARMY OH-13E M74A)
- Applied: November 30, 1987
- Status date: February 18, 1988
- Product: Aircraft, Rotorcraft
- Certification basis: Part 1, Part 21, Part 27
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW), [TCDS H1IN](https://openairdocs.org/tcds/H1IN), [TCDS H9EU](https://openairdocs.org/tcds/H9EU), [TCDS H2WE](https://openairdocs.org/tcds/H2WE), [TCDS H7SW](https://openairdocs.org/tcds/H7SW), [TCDS H3WE](https://openairdocs.org/tcds/H3WE), [TCDS 4H11](https://openairdocs.org/tcds/4H11), [TCDS R00006DE](https://openairdocs.org/tcds/R00006DE), [TCDS 4H12](https://openairdocs.org/tcds/4H12), [TCDS 2H1](https://openairdocs.org/tcds/2H1), [TCDS 2H3](https://openairdocs.org/tcds/2H3), [TCDS H-1](https://openairdocs.org/tcds/H-1)
- Certificate PDF: https://openairdocs.org/files/sha256/c5/07/c50713865bed4a2167068469ffb1abc1103c6d3e12434d040b06b4c1d0334602
- Approved model list and other attachments: [AML SH4173NM Simplex Elect Sys.pdf](https://openairdocs.org/files/sha256/8f/60/8f60baee8c6fd66a593da00517c6b052110e3cd0c52d391cb1414864c8690689)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EDD42605B08EAFC4862578F80065C789.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH4173NM

## ADs that name it (0)

None.

## Approved models (66, first 50)

- Bell Helicopter Textron Canada Limited 206 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206A-1 (OH-58A) ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Eurocopter France AS-350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350C ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France AS-350D1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Eurocopter France SA.315B Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- Eurocopter France SA.316B Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- Eurocopter France SA.316C Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- Eurocopter France SE.3160 Alouette III ([TCDS H1IN](https://openairdocs.org/tcds/H1IN))
- FH1100 Manufacturing Corporation 1100 ([TCDS H2WE](https://openairdocs.org/tcds/H2WE))
- MD Helicopter Inc. 369 ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369 Series ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369A ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369E ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369F ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369FF ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HM ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 369HS ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopter Inc. 500N ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- McCreary Gifton OH-13E ([TCDS H7SW](https://openairdocs.org/tcds/H7SW))
- Rogerson Hiller Corporation UH-12E ([TCDS 4H11](https://openairdocs.org/tcds/4H11))
- Rogerson Hiller Corporation UH-12E-L ([TCDS 4H11](https://openairdocs.org/tcds/4H11))
- Rotorcraft Development Corporation OH-58A ([TCDS R00006DE](https://openairdocs.org/tcds/R00006DE))
- Rotorcraft Development Corporation OH-58A+ ([TCDS R00006DE](https://openairdocs.org/tcds/R00006DE))
- Rotorcraft Development Corporation OH-58C ([TCDS R00006DE](https://openairdocs.org/tcds/R00006DE))
- Schweizer Aircraft Corporation 269A ([TCDS 4H12](https://openairdocs.org/tcds/4H12))
- Schweizer Aircraft Corporation 269A-1 ([TCDS 4H12](https://openairdocs.org/tcds/4H12))
- Schweizer Aircraft Corporation 269B ([TCDS 4H12](https://openairdocs.org/tcds/4H12))
- Schweizer Aircraft Corporation 269C ([TCDS 4H12](https://openairdocs.org/tcds/4H12))
- Scotts-Bell 47 Inc 47 ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47B ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47B3 ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47D ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47D1 ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47E ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47G ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47G-2 ([TCDS H-1](https://openairdocs.org/tcds/H-1))
- Scotts-Bell 47 Inc 47G-2A ([TCDS 2H3](https://openairdocs.org/tcds/2H3))
- Scotts-Bell 47 Inc 47G-2A-1 ([TCDS 2H3](https://openairdocs.org/tcds/2H3))

All 66: https://openairdocs.org/stc/SH4173NM/models.md

## 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.

Number SH4173NM

This certificate, issued to: Simplex Manufacturing Company 13340 NE Whitaker Way Portland, OR 97230

Part * of the * Regulations.

Original ProductType Certificate Number: * See Attached Approved Model List Number Make: SH4173NM for List of Approved Helicopter Models Model: and Applicable Airworthiness Regulations

Description of the Type Design Change: Installation of Simplex Model 7600 modular electrical system in accordance with Simplex Drawing List entitled “Model 7600 Electrical System,” Revision A, dated January 08, 1988, or later FAA-approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above model helicopters only. This approval should not be extended to other helicopters of this model on which other previously approved modifications are incorporated, unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes I type design, will introduce no adverse effect upon the airworthiness of that helicopter.

A copy of this Certificate and Approved Model List (AML) must be maintained as part of the permanent records for the modified helicopter.

Date of application: November 30, 1987 Date reissued:

Date of issuance: February 18, 1988 Date amended:

**FAA FORM 8110-2-1 (10-69)**

(Signature) Manager, Seattle Aircraft Certification Office (Title) Original Signed by William B. Ashworth

### AML SH4173NM Simplex Elect Sys.pdf

This is OCR from the scanned FAA attachment. OCR can misread letters and numbers.

**FAA APPROVED MODEL LIST (AML) NO. SH4173NM**

SIMPLEX FOR INSTALLATION OF MODEL 7600 MODULAR ELECTRICAL SYSTEM Issue Date: February 18, 1988 FAA

**FAA APPROVED**

**ORIGINAL CERTIFICATION APPROVED INSTALLATION**

**TYPE BASIS DRAWING LIST INSTRUCTIONS AML**

**AIRCRAFT AIRCRAFT CERTIFICATE FOR AMENDMENT**

•ITEM, MAKE MODEL NUMBER ALTERATION NUMBER ¡REVISION NO. NUMBER ; REV. NO DATE

AND DATE 1 BELL H2SW CAR 6 dated 12/20/56 with MDL 7600 Rev. D Model 7600 Rev. D 8/01/94 Amendments and Special Electrical 8/06/97 Electrical 8/05/97 Conditions as given in TCDS System System 1H2SW 2 BELL H-1 CAR 6 dated 5/24/46 3 BELL 147J, 47K 2H1 CAR 6 effective 1/15/51 with 47J-2 Amendments 6-1 thru 6-6 147J-2A BELL 147G Series 2H3 CAR 6 dated 12/20/56 with Amendments 6-1 thru 6-6 and ISTC No. SH657NW 5 BELL 47G-5 with 12 2H3 CAR 6 dated 12/20/56 with volt system Amendments 6-1 thru 6-4 6 TEXAS OH-13E/M74 H7SW FAR 21.25 (a) (2) - Special HELICOPTER OH-13E/M74A Purpose Modification CORP. Reference CAR 6 effective 10/2/59 and STC No.

SH1166NW 7 HILLER UH-12E 4H11 CAR 6 dated 12/20/56 with AVIATION 'Amendments 6-1 thru 6-4 and ISTC No. SH178WE Page 1 of 3

**FAA APPROVED MODEL LIST (AML) NO. SH4173NM**

SIMPLEX INSTALLATION OF MODEL 7600 MODULAR ELECTRICAL SYSTEM Issue Date: February 18, 1988 FAA

**FAA APPROVED**

**ORIGINAL CERTIFICATION APPROVED INSTALLATION**

TYPE BASIS DRAWING LIST INSTRUCTIONS AML ITEM AIRCRAFT MAKE AIRCRAFT MODEL CERTIFICATE NUMBER ALTERATION FOR NUMBER REVISION NO. AND DATE NUMBER REV. NO. AMENDMENT DATE HILLER UH-12E 4H11 CAR 6 dated 12/20/56 with MDL 7600 Rev. D Model 7600 Rev. D Ori AVIATION UH-12E-L ¡Amendments 6-1 thru 6-4 Electrical 8/06/97 Electrical 8/05/97 System System 9 HILLER :FH-1100 H2WE /CAR 6 dated 12/20/56 with AVIATION Amendments 6-1 thru 6-4 and ¡Special Conditions and Exemptions listed in TCDS H2WE 10 MCDONNELL :269A, 269A-1 4H12 ¡NORMAL CATEGORY: CAR 6 DOUGLAS 1269B, 269C /dated 1/15/51 with (HUGHES) Amendments listed in TCDS :4H12 269B RESTRICTED CAT.:

CAR 8 dated 10/11/50 269C RESTRICTED CAT.:

¡FAR 21.25 dated 2/01/65 11 MCDONNELL 1369-Series H3WE CAR 6 dated 12/20/56 with 5/09/94 DOUGLAS ,500N ¡Amendments and Special (HUGHES) Conditions and FAR 27 requirements given in TCDS H3WE Page 2 of 3

**FAA APPROVED MODEL LIST (AML) NO. SH4173NM**

SIMPLEX INSTALLATION OF MODEL 7600 MODULAR ELECTRICAL SYSTEM Issue Date: February 18, 1988 FAA

**FAA APPROVED**

**ORIGINAL CERTIFICATION APPROVED INSTALLATION**

**TYPE BASIS DRAWING LIST INSTRUCTIONS AML**

• ITEM AIRCRAFT MAKE AIRCRAFT MODEL CERTIFICATE NUMBER ALTERATION FOR NUMBER REVISION NO AND DATE NUMBER REV. NO *AMENDMENT DATE 12 AEROSPATIALE SE.3160 H11N CAR 10 (FAR 21.29) CAR 6 MDL 7600 Rev. D Model 7600 Rev. D Ori ;SA.316B dated 12/20/56 with Electrical 8/06/97 Electrical 8/05/97 ¡SA.316C Amendments and Special System System ISA.315B Requirements in TCDS H11N ; (Alouette III) 13 SOCIETE AS-350B H9EU FAR 21.29 and FAR 27 dated 4/25/90 NATIONALE 'AS-350C 12/01/65 with Amendments 27-1 INDUSTRIALE AS-350D thru 27-10 with FAA Special AEROPATIALE |AS-350D1 /Condition No. 27-79-EU-23 :(Astar) /dated 8/31/77 and equivalent safety found with respect to FAR 27.1189 (shutoff means) 14 GARLICK IOH-58A R-00006DE FAR 27 8/08/97 ;OH-58A+ 1OH-58C FAA Approved: Gend Sen Acting Manager, Seattle Aircraft Certification Office Date: Chugust 8,1897 Page 3 of 3 Cad#3 proiect/roos FAAAppraied.doc

## Every issue (1)

- February 18, 1988: Amended, Current. [certificate](https://openairdocs.org/files/sha256/c5/07/c50713865bed4a2167068469ffb1abc1103c6d3e12434d040b06b4c1d0334602), [AML SH4173NM Simplex Elect Sys.pdf](https://openairdocs.org/files/sha256/8f/60/8f60baee8c6fd66a593da00517c6b052110e3cd0c52d391cb1414864c8690689)

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