# STC ST12442IB

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: ALAMO ENGINEERING GmbH, Germany
- Description: Installation of Iridium Certus Satellite System
- Applied: May 29, 2026
- Status date: July 17, 2026
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM)
- Certificate PDF: https://openairdocs.org/files/sha256/00/9a/009a23c47efd161e23f24fc682cc4c5b0959832cdf89fd63e4f884fad5e9051d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142723343120260723183253.0001
- DRS record last changed: July 23, 2026
- Page: https://openairdocs.org/stc/ST12442IB

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 757-200 Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM))

## 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.

IMPORT ST12442IB ALAMO ENGINEERING GmbH 82205 GILCHING

GERMANY Part 25 Title 14 Code of Federal Regulations A2NM The Boeing Company 757-200 Series

1. FAA STC ST12381IB is a prerequisite for this modification.

(See Limitations and Conditions Continued on Page 3 of 3) 05/29/2026 07/17/2026 John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3

1. Installation of Iridium Certus Satellite System for cabin use only in accordance with Alamo Engineering GmbH Master Document List Number MDL25A09AE-01, Revision A, dated July 2, 2025, or later EASA approved revisions.

(See Description of Type Design Change Continued on Page 3 of 3)

2. Maintenance in accordance with Alamo Engineering GmbH Instructions for Continued Airworthiness Document Number ICA25A09AE-01, Revision A, dated May 12, 2025, or later EASA accepted revision.

3. Operation in accordance with Alamo Engineering GmbH Aircraft Flight Manual Supplement Document Number FMS25A09AE-01, Revision A, dated June 10, 2025, or later EASA approved revision.

2. This STC is applicable to all serial numbers for the applicable make and model.

3. Maintenance must be done in accordance with the Airworthiness Limitation Section of the Instructions for Continued Airworthiness listed in the Description of Type Design section of this STC.

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.

Certification Basis:

The certification basis for this modification is based upon Part 25 as specified in Type Certificate Data Sheet (TCDS) A2NM, except for areas changed or affected by the design change, for which the certification basis is the TCDS plus:

- 14 CFR Part 25 regulations at Amendment 25-46: 25.629

- 14 CFR Part 25 regulations at Amendment 25-54: 25.365

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## Every issue (1)

- July 17, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/00/9a/009a23c47efd161e23f24fc682cc4c5b0959832cdf89fd63e4f884fad5e9051d)

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