# STC SH546NE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sikorsky Aircraft Corporation, United States
- Description: Medevac interior installation.
- Applied: July 22, 1987
- Status date: December 17, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/f9/5b/f95b1149024dcad9c3f0e19e64e3ebb1a37e9a7e8164e5fcad119e8fc00180ce
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3180D8954FC42CEA86257DB700508EA7.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH546NE

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron 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 SH546NE Sikorsky Aircraft Corporation 6900 Main Street Stratford, CT 06615 Federal Aviation Regulations.

1. Medevac interior installation in accordance with Keystone Helicopter Corporation Drawing List Report No. 87-8 Rev. A, dated November 19, 1987.

2. Keystone Helicopter Corporation Rotorcraft Flight Manual Supplement No. FM87-8, FAA approved November 19, 1987 is required with this modification.

1. Equivalent safety has been established for FAR 29.813(c) and (c)(2) (through Amendment 29-12)-Emergency Exit Access by satisfactory completion of the evacuation demonstration described in Rotorcraft Flight Manual Supplement No. FM 87-8, Section III- Emergency and requires that the helicopter in the EMS configuration be operated with a minimum of one(1) pilot and two(2) cabin attendants trained in this emergency evacuation procedure.

2. You cannot use descriptive data about this design change to duplicate other products. This approval is limited to only the installation made in Bell Helicopter Textron Model 412, serial number 33125. This STC does not permit manufacturing of parts for multiple installations.

Gaetano Sciortino Manager New York Aircraft Certification Office Bell Helicopter Textron 412 October 1, 2011, December 17, 2014 July 22, 1987 November 19, 1987 H4SW 2

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

To (Name and address of transferee)

From (Name and address of grantor)

2 SH546NE

## Every issue (2)

- December 17, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f9/5b/f95b1149024dcad9c3f0e19e64e3ebb1a37e9a7e8164e5fcad119e8fc00180ce)
- October 1, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/2d/7f/2d7fa96122dd6f3602d4fe3df2e8a31988cab2eabb03ee20c44fc5c9406483ce)

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