# STC SR04637CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Airwolf Aerospace LLC, United States
- Description: Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control
Panel
- Applied: August 26, 2019
- Status date: January 11, 2024
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW), [TCDS H3WE](https://openairdocs.org/tcds/H3WE), [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS R0001RD](https://openairdocs.org/tcds/R0001RD), [TCDS H9EU](https://openairdocs.org/tcds/H9EU), [TCDS H11EU](https://openairdocs.org/tcds/H11EU), [TCDS 4H11](https://openairdocs.org/tcds/4H11)
- Certificate PDF: https://openairdocs.org/files/sha256/5b/52/5b52ea017c8acfbb08a1f6b9768fdf10b5524546e36b0a8f9e730662a7d116d7
- Approved model list and other attachments: [SR04637CH_AML.pdf](https://openairdocs.org/files/sha256/df/92/df92844cae08c3ff1d42de0a73971de79ff051eeab23709d5c450d788122dbc0)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132336690120241023134717.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR04637CH

## ADs that name it (0)

None.

## Approved models (39)

- Airbus Helicopters AS350B ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350B1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350B2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350B3 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350BA ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350C ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350D1 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS355E ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355F ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355F1 ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355F2 ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters AS355N ([TCDS H11EU](https://openairdocs.org/tcds/H11EU))
- Airbus Helicopters EC 130 B4 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters EC 130 T2 ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters EC120B ([TCDS R0001RD](https://openairdocs.org/tcds/R0001RD))
- 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))
- MD Helicopters Inc. 369 ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369A ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369E ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369F ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369FF ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369H ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369HE ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 369HS ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- MD Helicopters Inc. 500N ([TCDS H3WE](https://openairdocs.org/tcds/H3WE))
- Siam Hiller Holdings Inc. UH-12E ([TCDS 4H11](https://openairdocs.org/tcds/4H11))
- The Enstrom Helicopter Corporation 480 ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation 480B ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation TH-28 ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))

## 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.

FAA Form 8110-2 (03/21) Page 1 of ___ SR04637CH Airwolf Aerospace LLC 15369 Madison Rd Middlefield, OH 44062 Title14 Code of Federal Regulations Part 27 See AML See AML See AML Replacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control Panel in accordance with Master Drawing List listed on AML SR04637CH; Instructions for Continued Airworthiness, Document No. ICA-STC-AA17-800 Rev B, dated January 31, 2023 or later FAA approved revision; Rotorcraft Flight Manual Supplement as listed on AML No. SR04637CH is required with this installation.

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

2. A copy of this Certificate and FAA Approved Model List (AML) No. SR04637CH must be maintained as part of the permanent records for the modified aircraft.

3. 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.

August 26, 2019 January 11, 2024 Paul (Vu) Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 2 FOR

### SR04637CH_AML.pdf

Page 1 of 2

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) STC SR04637CH FOR**

REPLACEMENT OF EXISTING SHIP BATTERY WITH LITHIUM ION BATTERY AND ANNUNCIATOR CONTROL PANEL ISSUE DATE: January 11, 2024

**ITEM AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**FLIGHT MANUAL**

**SUPPLEMENT**

**FAA APPROVED**

MASTER DATA LIST AML REV DATE Number Revision* Number Revision*

1. Bell Helicopter Textron Canada Limited 206, 206A, 206A-1 (OH85A), 206B, 206B-1, 206L, 206L-1, 206L-3, 206L-4 H2SW See Note 1 FMS B206.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

2. MD Helicopters Inc. (MDHI) 369 (Army YOH-6A), 369A (Army OH-6A), 369H, 369HM, 369HS, 369HE, 369D, 369E, 369F, 369FF, 500N H3WE See Note 1 FMS MD369.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

3. The Enstrom Helicopter Corporation TH-28, 480, 480B H1CE See Note 1 FMS

480.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

4. Airbus Helicopters EC120B R0001RD See Note 1 FMS EC120.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

Page 2 of 2

**ITEM AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**FLIGHT MANUAL**

**SUPPLEMENT**

**FAA APPROVED**

MASTER DRAWING LIST AML REV DATE Number Revision* Number Revision*

5. Airbus Helicopters AS350C, AS350D, AS350D1, AS350B, AS350B1, AS350B2, AS350BA, AS350B3 H9EV See Note 1 FMS AS350.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

6. Airbus Helicopters EC130B4, EC130T2 H9EV See Note 1 FMS EC130.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

7. Airbus Helicopters AS355E, AS355F, AS355F1, AS355F2, AS355N H11EU See Note 1 FMS AS355.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

8. Siam Hiller Holdings, Inc UH-12E, (Army OH-23G) (Army H-23F) 4H11 See Note 1 FMS UH12.10 IR, dated 11/30/2023

**MDL-STC- AA17-100**

B, dated 11/16/2023

*Or later FAA Approved Revision

Note 1: Certification Basis for Alteration is Part 27, Amendment 27‐1 thru 27‐33, Amendment thru 27‐40 for the following regulations: 27.301, 27.303, 27.305, 27.307,

27.337, 27.1301, 27.1501, 27.1529, 27.1581; 27.1583, 27.1585

FAA Approved: __________________________ For Paul (Vu) Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service

AMENDED:

REISSUE:

## Every issue (1)

- January 11, 2024: Issued, Current. [certificate](https://openairdocs.org/files/sha256/5b/52/5b52ea017c8acfbb08a1f6b9768fdf10b5524546e36b0a8f9e730662a7d116d7), [SR04637CH_AML.pdf](https://openairdocs.org/files/sha256/df/92/df92844cae08c3ff1d42de0a73971de79ff051eeab23709d5c450d788122dbc0)

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