# STC SR11864DE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RSG AeroDesign LLC, United States
- Description: Installation of Belt Driven Auxiliary Generator i
- Applied: October 20, 2023
- Status date: April 7, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/ab/32/ab32b0b0b907d440e16257c1963d1cd1cc70e4ebbba1c0cf9a81b493cbeb607b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141708947120250414172946.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR11864DE

## ADs that name it (0)

None.

## Approved models (1)

- Airbus Helicopters AS350B3 ([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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number 

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H9EU Airbus Helicopters AS350B3 Installation of Belt Driven Auxiliary Generator in accordance with Doc No. MDL0010, Master Drawing List, Auxiliary Generator Installation, Rev. G dated 2024-11-12, FAA approved 2/20/2025 or later FAA approved revisions.

Continued Page 3 of 4

1. This STC is applicable to all serial numbers for the Airbus Helicopters AS350B3.

2. This generator is certified for non-essential systems only, unless further FAA approval is obtained.

Continued Page 3 of 4 10/20/23 4/7/25 2/21/25 Kreg R. Voorhies, ODA Lead administrator Cert Works, LLC ODA ODA No. ODA(AIR)883887-NM 4

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number  (IIHFWLYH'DWH I Transferr Endorsementt Transfer the ownership of Supplemental Type Certificate Number:

Too (Name and address of transferee):

Date oI transfer:

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

(Continuation Sheet) Number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escription of Type Design Change Continued:

Doc No. ICA0010, Instructions for Continued Airworthiness (ICA), Auxiliary Generator Installation, Rev. “-“ dated 2024-08-07, FAA accepted 2/20/2025 or later FAA accepted revision are required to be made available at installation. Doc No. FMS0010, Rotorcraft Flight Manual Supplement, Auxiliary Generator Installation, Revision A dated 10/7/2024, FAA approved 2/20/2025 or later FAA approved revision, is required for this installation.

3. Generator output is limited to 50 amps continuous.

4. The installer must determine whether this design change is compatible with previously approved modifications

5. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

6. The FAA has not certified equipment for which the auxiliary generator provisions are intended. Additional FAA approval is required to install equipment using or attached to the auxiliary generator. The FAA must evaluate the installation to ensure it complies with the applicable airworthiness standards.

Certification Basis see Page 4 of 4 34 04/07/25

(Continuation Sheet) Number  (IIHFWLYH'DWH  $Q\DOWHUDWLRQRIWKLVFHUWLILFDWHLVSXQLVKDEOH E\D ILQH RIQRW H[FHHGLQJRULPSULVRQPHQWQRWH[FHHGLQJ \HDUVRUERWK7KLVFHUWLILFDWH PD\ EHWUDQVIHUUHGRUPDGH DYDLODEOHWR WKLUGSHUVRQVE\OLFHQVLQJDJ UHHPHQWVLQDFFRUGDQFHZLWK&)53RVVHVVLRQ RIWKLV6XSSOHPHQWDO7\SH &HUWLILFDWH 67& GRFXPHQWE\SHUVRQVRWKHUWKDQ WKH 67&KROGHUGR HVQRWFRQVWLWXWHULJKWVWRWKHGHVLJQGDWD QRUWRDOWHUDQ DLUFU DIW DLUFUDIWHQJLQH KROGHU$Q 67&KROGHUZKRDOORZVDSHUVRQWRXVHWKH67&WRDOWHUDQDLUFUDIWDLUFUDIWHQJLQHRUSURSHOOHUPXVWSURYLGH WKDWSHUVRQZLWKZULWWHQ SHUPLVVLRQ DFFHSWDEOHWR WKH)$$ 5HI &)5  )$$  3DJH BBBRI BBB SR11864DE Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for the Airbus Helicopters AS350B3 Auxiliary Generator Installation is as follows:

a. The type certification basis for Airbus Helicopters AS350B3 is shown on TCDS H9EU for parts not changed or not affected by the change.

b. The certification basis for parts changed or affected by the change since the reference date of application, 10/20/2023, is based upon 14 CFR Part 27 effective February 1, 1965 plus Amendments 27-1 through 27-10. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for significant changes in FAA Order 8110.48, the certification basis for this modification was determined to be:

Regulations at latest amendment; None Regulations at an intermediate amendment; None Regulations at the amendment level in TCDS H9EU;

14 CFR Sections: 27.29 Amdt. - ; 27.49 Amdt. 27-44; 27.65 Amdt. 27-33; 27.301 Amdt. - ; 27.303 Amdt. - ;

27.305 (a) Amdt. - ; 27.307(a) Amdt. 27-26; 27.337(a) Amdt. 27-26; 27.341 Amdt. - ; 27.601(a) Amdt. - ; 27.603 Amdt. - ; 27.605 (a) Amdt. - ; 27.607 Amdt. 27-4; 27.609 Amdt. - ; 27.611(a)(b) Amdt. - ; 27.613 Amdt. - ;

227.619(b)(1) Amdt. - ; 27.625(a) Amdt. - ; 27.771 Amdt. - ; 27.773(a) Amdt. 27-50; 27.777 Amdt. - ; 27.1163(b) Amdt. 27-2; 27.1301 Amdt. - ; 27.1307(e) Amdt. - ; 27.1309(a),(b) Amdt. - ; 27.1322 Amdt. 27-2; 27.1351(a),(b)

(1)(i),(ii),(c),(d) Amdt. - ; 27.1357(a)(b)( c)(d) Amdt. - ; 27.1361 Amdt. - ; 27.1365 Amdt. - ; 27.1367 Amdt. - ;

27.1501 Amdt. 27-14; 27.1529 Amdt. 27-18; 27.1541 Amdt- ; 27.1555(a)(d) Amdt. - ; 27.1581(a)(b)(d) Amdt.

27-14; 27.1585(a) Amdt. 27-21; 27.1587(a) Amdt. 27-21 End 44 04/07/25

## Every issue (1)

- April 7, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ab/32/ab32b0b0b907d440e16257c1963d1cd1cc70e4ebbba1c0cf9a81b493cbeb607b)

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