# STC SR01928NY

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Leonardo Helicopters US Corporation, United States
- Description: Installation of emergency float system
- Applied: May 29, 2001
- Status date: July 15, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/1d/34/1d34017d5567c48425afe57be181fb45501a3cbbcb2bb561ae8e00fdfe44d4d2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118343623720260820142957.0001
- DRS record last changed: August 20, 2026
- Page: https://openairdocs.org/stc/SR01928NY

## ADs that name it (0)

None.

## Approved models (3)

- Bell Helicopter Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron Inc. 412CF ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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.

SR01928NY Leonardo Helicopters US Corporation 3050 Red Lion Rd Philadelphia, PA 19114 Part 29 Title 14 Code of Federal Regulations H4SW Bell 412, 412CF, 412EP

1. This STC is applicable to the following BHT 412 serial numbers: 33001 to 33100, 33121 to 33129, 33131 to 33136, 36020 to 36056, 36067 and subsequent.

(Limitations and Conditions continued on page 3 of 3) 05/29/2001 08/26/2004 07/15/2026 07/15/2004 Michael Linegang Manager, East Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Installation of Emergency Float System in accordance with Augusta Emergency Flotation System Kit P/N 412-4600-04, Rev. D1, dated September 12, 2000.

11/18/2014

SR01928NY 07/15/2026 3

SR01928NY 07/15/2026

2. Agusta Rotorcraft Flight Manual Supplement, Report No. AAC-ENG-01-016, Rev. -, FAA approved July 15, 2004 is required.

3. Inspection of the rotorcraft is to be done in accordance with Helicopter Bell Model 412 Instructions for Continued Airworthiness for the installation of Agusta emergency Flotation Kit P/N 412-4600-04, Report No. AAC-ENG-01-017, Rev. -, dated April 12, 2004.

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 (2)

- July 15, 2026: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1d/34/1d34017d5567c48425afe57be181fb45501a3cbbcb2bb561ae8e00fdfe44d4d2)
- November 18, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/ae/2d/ae2d01a91df36edb709dc3887c2ed1abc0c53e10e272364a46670ad06690fe0d)

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