# STC SH573NE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sikorsky Aircraft Corporation, United States
- Description: Air-Vac Transport incubator Model 304-3226-900 installation.
- Applied: February 1, 1988
- Status date: December 17, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/ea/83/ea83e9c705a36f94878916fbcc8ef05e7ac45a8f1f18f0dbca5cff50e25cfb58
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CAD4BE308BE8A67786257DB700513284.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH573NE

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron Inc. 412 ([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.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title SH573NE Sikorsky Aircraft Corporation 6900 Main Street Stratford, CT 06615 Federal Aviation Regulations.

1. Air-Vac Transport Incubator Model 304-3226-900 installation in accordance with Keystone Helicopter Corporation Drawing List Report No. 87-12 Rev. A dated May 6, 1988.

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

2. 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.

Gaetano Sciortino Manager New York Aircraft Certification Office Bell Helicopter Textron Bell 412 October 1, 2011, December 17, 2014 February 1, 1988 May 10, 1988 H4SW 2

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

2 SH573NE

## Every issue (2)

- December 17, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ea/83/ea83e9c705a36f94878916fbcc8ef05e7ac45a8f1f18f0dbca5cff50e25cfb58)
- October 1, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/2c/c6/2cc641006e9184fb4fbba371c76e06908a1fcd96a06c45d1e51ffb20ccca44f8)

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