# STC SH858NE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sikorsky Aircraft Corporation, United States
- Description: Medevac interior installations of five basic configurations.
- Applied: March 21, 1991
- 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/f1/20/f120c4a428a71477053bf48376f8ceae79ea545875641aec466d2c5c4eb16b90
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FF0B4AF6560A72E286257DB70053877B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH858NE

## 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 SH858NE Sikorsky Aircraft Corporation 6900 Main Street Stratford, CT 06615 Federal Aviation Regulations.

1. Medevac interior installations of five basic configurations in accordance with Keystone Helicopter Corp. Installation Drawing List Report No. IDL-90-23, dated June 11, 1991.

2. Keystone Helicopter Corp. FAA approved June 14, 1991, Rotorcraft Flight Manual Supplement No. FM 90-23, is required with this STC.

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, Inc.

412 October 1, 2011, December 17, 2014 March 21, 1991 June 14, 1991 H4SW 2

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

To (Name and address of transferee)

From (Name and address of grantor)

2 SH858NE

## Every issue (2)

- December 17, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f1/20/f120c4a428a71477053bf48376f8ceae79ea545875641aec466d2c5c4eb16b90)
- October 1, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/a8/4b/a84b96acbebc515ee0770d39e4c9937e3ac330a341b10695e52ffb8d8acbeb23)

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