# STC SR02581NY-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sikorsky Aircraft Corporation, United States
- Description: Installation of Northern Airborne Technologies (NAT) NPX138N FM Transceiver.
- Applied: March 21, 2009
- Status date: December 17, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE)
- Certificate PDF: https://openairdocs.org/files/sha256/0e/96/0e964a86381f4c66930128dbc9ba7ff1e27d542af3354375f50b8443c4d4de41
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/476A56E89DA09BDE86257DBE00551715.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR02581NY-D

## ADs that name it (0)

None.

## Approved models (3)

- Sikorsky Aircraft Corporation S-76A ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))
- Sikorsky Aircraft Corporation S-76B ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))
- Sikorsky Aircraft Corporation S-76C ([TCDS H1NE](https://openairdocs.org/tcds/H1NE))

## 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 SR02581NY-D Sikorsky Aircraft Corporation 6900 Main Street Stratford, CT 06615 Federal Aviation Regulations.

1. Installation of Northern Airborne Technologies (NAT) NPX138N FM Transceiver in accordance with Keystone Helicopter Installation drawing List IDL02064 Rev. A, dated 05/21/2009 or later FAA approved revision.

2. Keystone Helicopter Instructions for Continued Airworthiness, NPX138N FM Transceiver, Report No. IC02064 Rev. -, dated April 9, 2009 or later FAA accepted revision is required for this modification.

3. FAA Approved Rotorcraft Flight Manual Supplement, Supplement No. FM02064 Rev. -, dated 05/21/2009 or later FAA approved revision is required for this modification.

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 Sikorsky S-76A/B/C October 1, 2011, December 17, 2014 March 12, 2009 May 21, 2009 H1NE 2

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

To (Name and address of transferee)

From (Name and address of grantor)

2 SR02581NY-D

## Every issue (3)

- December 17, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0e/96/0e964a86381f4c66930128dbc9ba7ff1e27d542af3354375f50b8443c4d4de41)
- October 1, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f1/15/f115e93d7e6d61f1125d82b84d725f86c10a45119e758a4287459cfc68771e1c)
- May 21, 2009: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/83/8b/838b76c00da82029d53a58c279668e48edc9a7e8a86cbeb7fbef348b86c77a20)

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