# STC SR12433IB

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Lake Central Air Services, Canada
- Description: Fabrication of equipment must be in accordance with the applicable Manufacturing Procedure document as shown on the attached FAA AML No. SR12433IB.
- Applied: July 2, 2026
- Status date: July 7, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Foreign approvals: TCCA STC #SH09-44 at Issue 809/05/2018
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/d7/dd/d7dd37b687a7faf3d4efe220452c07d3ad4f74a66d8ccb8d48163ab97092312e
- Approved model list and other attachments: [SR12433IB_AML.pdf](https://openairdocs.org/files/sha256/b6/c6/b6c6f80c2c0a8d6fd042a18b215b8600de0decbf428cc1ae56ba1c84d3bbb869)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139682452520260707174513.0001
- DRS record last changed: July 7, 2026
- Page: https://openairdocs.org/stc/SR12433IB

## ADs that name it (0)

None.

## Approved models (7)

- 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 AS350D ([TCDS H9EU](https://openairdocs.org/tcds/H9EU))
- Airbus Helicopters AS350D1 ([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.

FAA 8110-2 (10/24) Page 1 of ___ IMPORT SR12433IB Lake Central Air Services 1016 Sabre Lane, Muskoka Airport, R.R. 1 Gravenhurst, Ontario Canada P1P 1R1 Part 27 Title 14, Code of Federal Regulations *See attached FAA Approved Model List (AML) No. SR12433IB for a list of approved models and applicable airworthiness regulations.

*See attached FAA AML No. SR12433IB *See attached FAA AML No. SR12433IB

1. 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.

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

(See continuation sheet 3) 07/02/2026 07/07/2026 John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of internally mounted equipment

1. Fabrication of equipment must be in accordance with the applicable Manufacturing Procedure document as shown on the attached FAA AML No. SR12433IB.

2. Installation, removal, and inspection must be in accordance with the applicable Master Drawing List and Instructions for Continued Airworthiness / Installation Instructions document as shown on the attached FAA AML No. SR12433IB.

3. Required placard information is specified in the applicable Instructions for Continued Airworthiness / Installation Instructions document as shown on the attached FAA AML No.

SR12433IB.

4. Operation must be in accordance with the applicable Flight Manual Supplement document as shown on the attached FAA AML No. SR12433IB.

3. This STC is applicable to all serial numbers for the Make-Models as shown on the attached FAA AML No. SR12433IB.

4. Operation must be in accordance with the Limitations section of the applicable Flight Manual Supplement referenced in the Description of Type Design Change section of this STC.

----------END---------- 3 3

### SR12433IB_AML.pdf

**FAA APPROVED MODEL LIST (AML) NO. SR12433IB**

LAKE CENTRAL AIR SERVICES For Installation of Internally Mounted Equipment

Issue Date: July 7, 2026

Page 1 of 1 * or later Transport Canada Civil Aviation (TCCA) approved or accepted revision as applicable.

Approved Configuration Note: Items 1, 2, and 4 are compatible with Item 3, and vice versa.

FAA Approved: __________________________________ John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service

**ITEM DESCRIPTION MAKE MODEL & TCDS CERT BASIS**

**REQUIRED DOCUMENTATION INITIAL**

**APPROV AL DATE AMEND**

**DATE MASTER**

DRAWING LIST*

MANUFACTURING PROCEDURE*

**INSTRUCTIONS FOR**

**CONTINUED**

**AIRWORTHINESS /**

INSTALLATION INSTRUCTIONS*

FLIGHT MANUAL SUPPLEMENT* 1 Equipment Rack 24”, 36” & 40” Airbus Helicopters

AS350B AS350B1 AS350B2 AS350B3 AS350BA AS350D AS350D1

TCDS# H9EU 14 CFR Part 27 LCA01972-MDL Rev. 4, dated August 8, 2018 LCA01972-MP, Rev.

1, dated August 22, 2018 LCA01972-ICA Rev. 1, dated July 27, 2018 LCA01972-FMS Rev. 1, dated July 27, 2018 July 7, 2026 N/A 2 Gravity Meter Mount GT-1A / GT-2A & Rack Opt 14 CFR Part 27 LCA00620-MDL Rev. 6, dated January 1, 2017 LCA00620-MP, Rev.

0, dated August 11, 2009 LCA00620-CD Rev. 8, dated January 23, 2017 N/A 3 Project Power 14 CFR Part 27 LCA00740-MDL Rev. 4, dated November 16, 2016 LCA00740-MP, Rev.

3, dated December 21, 2016 LCA00740-ICA Rev. 3, dated December 21, 2016 LCA00740-FMS Rev. 0, dated December 23, 2016 4 Digital Gamma- Ray Spectrometer & 24 In. Rack 14 CFR Part 27 LCA01525-MDL Rev. 8, dated January 31, 2017 LCA01525-MP, Rev.

4, dated January 27, 2017 LCA01525-CD Rev. 3, dated January 16, 2017 N/A

## Every issue (1)

- July 7, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d7/dd/d7dd37b687a7faf3d4efe220452c07d3ad4f74a66d8ccb8d48163ab97092312e), [SR12433IB_AML.pdf](https://openairdocs.org/files/sha256/b6/c6/b6c6f80c2c0a8d6fd042a18b215b8600de0decbf428cc1ae56ba1c84d3bbb869)

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