# STC SR02753SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Isolair Inc., United States
- Description: Installation of Isolair Spray System model 3900-H125
- Applied: January 1, 2022
- Status date: February 6, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS H9EU](https://openairdocs.org/tcds/H9EU)
- Certificate PDF: https://openairdocs.org/files/sha256/73/ba/73ba2e134afa5df7186c3a1e53154decef8486af73f7de1ab9acf798f2ef5fbe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101018775820250707150518.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR02753SE

## ADs that name it (0)

None.

## Approved models (4)

- 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))

## 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.

(See Continuation Sheet Page 3 of 3 Pages) SR02753SE Isolair, Inc.

365 W Taft Vineland Road, Suite 100 Orlando, FL 32824 Part 27 Title 14 Code of Federal Regulations H9EU Airbus Helicopters AS350B1, AS350B2, AS350B3, AS350BA Installation of Isolair Spray System model 3900-H125 in accordance with Isolair Master Drawing Lists 39H125-001, Revision B, dated December 8, 2022, or later FAA-approved revisions; and 39H125-002, Revision C, dated December 8, 2022; or later FAA-approved revisions. Operated in accordance with Isolair Rotorcraft Flight Manual Supplement 3900-H125 RFMS, Revision B, FAA approved November 8, 2022, or later FAA-approved revision.

This STC is applicable to all serial numbers for this Make-Model.

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

January 1, 2022 February 6, 2025 March 9, 2023 For Manager, West Certification Branch

SR02753SE

End Description of Type Design Change (continued):

Maintained in accordance with Isolair Instructions for Continued Airworthiness 3900-H125 ICA, Revision A, dated October 2, 2020, or later FAA-approved revisions.

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.

SR02753SE

## Every issue (2)

- February 6, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/73/ba/73ba2e134afa5df7186c3a1e53154decef8486af73f7de1ab9acf798f2ef5fbe)
- March 9, 2023: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/cf/e7/cfe7cc176893b86ab0a00f7e9f46bec04e421ecc4c378dee517a0c64e442c3f5)

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