# STC SR12398DE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Air Comm Corporation, United States
- Description: Installation of Improved Heater Ejector
- Applied: August 19, 2025
- Status date: May 26, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS H13EU](https://openairdocs.org/tcds/H13EU)
- Certificate PDF: https://openairdocs.org/files/sha256/0e/82/0e823f2a35a9a235fd1fd672d487aa6b5b5d494f1c3fb50f913fa0d89383ffb8
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101032599220260728140922.0001
- DRS record last changed: July 28, 2026
- Page: https://openairdocs.org/stc/SR12398DE

## ADs that name it (0)

None.

## Approved models (4)

- Airbus Helicopters Deutschland GmbH (AHD) MBB-BK 117 C-1 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))
- Airbus Helicopters Deutschland GmbH (AHD) MBB-BK 117 C-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))
- Airbus Helicopters Deutschland GmbH (AHD) MBB-BK 117 D-2 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))
- Airbus Helicopters Deutschland GmbH (AHD) MBB-BK 117 D-3 ([TCDS H13EU](https://openairdocs.org/tcds/H13EU))

## 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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H13EU Airbus Helicopters Deutschland GmbH MBB-BK 117 C-1, MBB-BK 117 C-2, MBB-BK 117 D-2, MBB-BK 117 D-3 Installation of Improved Heater Ejector in accordance with Doc No. DL-EC145H-MIDL, Master Installation Drawing List, EC145 Heater Ejector, Rev. IR dated 09/APR/2026, FAA approved 5/26/2026 or later FAA approved revision. Parts manufactured in accordance with Doc No. DL-EC145H-MMDL, Master Manufacturing Drawing List, EC145 Heater Ejector, Rev. A dated 14/APR/2026, FAA approved 5/26/2026 or later FAA approved revision.

Continued Page 3 of 3.

1. This STC is applicable to all serial numbers for the Airbus Helicopters Deutschland GmbH MBB-BK 117 C-1, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3.

Continued Page 3 of 3.

08/19/2025 05/26/2026 Kreg R. Voorhies, ODA Lead administrator Cert Works, LLC ODA ODA No. ODA(AIR)883887-NM 3

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number  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. EC145H-200M-1, Instructions for Continued Airworthiness (ICA), EC145 Heater Ejector, Rev. - dated 5/11/2026, FAA accepted 5/26/2026 or later FAA accepted revision are required to be made available at installation. A Flight Manual Supplement is not required for this installation.

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

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.

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 Deutschland GmbH MBB-BK 117 C-1, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 Heater Ejector Installation is as follows:

a. The type certification basis for Airbus Helicopters Deutschland GmbH MBB-BK 117 C-1, MBB-BK 117 C-2, MBB-BK 117 D-2, and MBB-BK 117 D-3 is shown on TCDS H13EU 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, 8/19/2025, is based upon 14 CFR Part 29, effective February 1, 1965 plus Amendments 29-1 through 29-40. 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 H13EU;

14 CFR Sections: 29.301 Amdt. - ; 29.303 Amdt. - ; 29.305 Amdt. - ; 29.307(a) Amdt. 29-30; 29.337(a) Amdt.

29-30; 29.341 Amdt. - ; 29.601(a) Amdt. - ; 29.603 Amdt. 29-17; 29.605(a) Amdt. 29-17; 29.609(a) Amdt. - ;

29.611 Amdt. - ; 29.613 Amdt. 29-30; 29.619(b)(1) Amdt. - ; 29.625(a) Amdt. - ; 29.1301 Amdt. - ; 29.1309(a),(b) Amdt. 29-14; 29.1351(a) Amdt. 29-40; 29.1353(a) Amdt. 29-15; 29.1357(a-c) Amdt. 29-24; 29.1431 Amdt. - ;

29.1529 Amdt. 29-20

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - End - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 33 05/26/26

## Every issue (1)

- May 26, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0e/82/0e823f2a35a9a235fd1fd672d487aa6b5b5d494f1c3fb50f913fa0d89383ffb8)

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