# STC ST12365IB

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: EIRTECH AVIATION SERVICES LIMITED, Ireland
- Description: Installation of ERT/CNG/1579 Fuselage Protection for Unpaved Runway for Belly Fuselage Skin Panels
- Applied: March 17, 2026
- Status date: April 16, 2026
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Foreign approvals: EASA STC 10077991 Rev. 1
- Data sheets: [TCDS A53EU](https://openairdocs.org/tcds/A53EU)
- Certificate PDF: https://openairdocs.org/files/sha256/f8/b2/f8b2091e370ab0e6089bb4828f39b5605e52e72af8f197ff3452c780c37dc0cc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183798560120260417141054.0001
- DRS record last changed: April 17, 2026
- Page: https://openairdocs.org/stc/ST12365IB

## ADs that name it (0)

None.

## Approved models (10)

- ATR – GIE Avions de Transport Régional ATR42-300 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR42-320 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR42-500 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-101 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-102 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-201 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-202 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-211 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-212 ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))
- ATR – GIE Avions de Transport Régional ATR72-212A ([TCDS A53EU](https://openairdocs.org/tcds/A53EU))

## 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 ST12365IB**

**EIRTECH AVIATION SERVICES LIMITED**

**EAST RAMP**

**SHANNON AIRPORT**

SHANNON INDUSTRIAL ESTATE CO. CLARE IRELAND Part 25 Title 14 Code of Federal Regulations A53EU ATR – GIE Avions de Transport Régional ATR42-300, ATR42-320, ATR42-500, ATR72-101, ATR72-102, ATR72-201, ATR72-202, ATR72-211, ATR72-212, ATR72-212A

1. This STC is applicable to all serial numbers for the applicable Make and Model.

(See Limitations and Conditions Continued on Page 3 of 3) 03/17/2026 04/16/2026 John Yoo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service 3

1. Installation of ERT/CNG/1579 Fuselage Protection for Unpaved Runway for Belly Fuselage Skin Panels in accordance with Eirtech Aviation Services Ltd. Master Document List Document Number MDL/1579-001, Issue 17, dated February 19, 2026, or later EASA approved revision.

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

2. Maintenance in accordance with Eirtech Aviation Services Ltd. Instructions for Continued Airworthiness as follows:

-ATR42 Model Aircraft: Aircraft Manual Supplement Document Number AMS/1579-001A, Issue 6, dated January 21, 2026, or later EASA approved revision.

-ATR72 Model Aircraft: Aircraft Manual Supplement Document Number AMS/1579-001, Issue 11, dated January 21, 2026, or later EASA approved revision.

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.

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## Every issue (1)

- April 16, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/f8/b2/f8b2091e370ab0e6089bb4828f39b5605e52e72af8f197ff3452c780c37dc0cc)

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