# STC SR00256BO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Pro Star Aviation, LLC, United States
- Description: Installation of Universal Avionics Systems Corporation (UASC) Software Control Number (SCN) 31.X in UASC Cockpit Display Computer (UCDC) P/N 3040-05-( ).
- Applied: October 23, 2006
- Status date: September 13, 2018
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE)
- Certificate PDF: https://openairdocs.org/files/sha256/35/4f/354ff05687eb3a771d7ee6b2b20aeb700e0aa90c8f0100dc1572965e34b88a9a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66E679C871623F17862583220051111C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00256BO

## 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

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation ANISTRATIO Federal Aviation Administration Supplemental Type Certificate Number: SR00256BO This certificate issued to: Pro Star Aviation, LLC 8 Kelly Avenue Londonderry, NH 03053 Part 29 of the Federal Aviation Regulations.

Original Product - Type Certificate Number: HINE Make: Sikorsky Model: S-76A, S-76B. S-76C Description of Type Design Change:

Installation of Universal Avionics Systems Corporation (UASC) Software Control Number (SCN) 31.X in UASC Cockpit Display Computer (UCDC) P/N 3040-05-() in accordance with Pro Star Aviation Master Document List 20676-MDL-01, revision IR. dated July 6, 2007, or later FAA approved revision.

1. This constitutes approval of software revision SCN 31.X only. UASC Cockpit Display Computer and associated display must be installed under separate FAA approval. This approval includes updating the UCDC to PIN 3040-05-().

2. Pro Star Aviation Rotorcraft Flight Manual Supplement No. 20676-FMS-01, Revision IR, dated August 1, 2007 or later FAA approved revision is required and must be carried during all flights.

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

(See continuation on page 3 of 3)

Date of Application: October 23, 2006 Date Reissued: September 13, 2018 Date of Issuance: August 1, 2007 Date Amended:

By Direction of the Administrator Signature Reuni Dahle Kevin Dickert Title Manager, Boston ACO Branch The ST's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STC holder.

FAA Form 8110-2 (5/14) Page 1 of 3

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SR00256BO To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement):

The STC's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STO holder.

FAA Form 8110-2 (5/14) Page 2 of 3

United States of America Department of Transportation PHIVISTRAND Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SR00256BO Certification Basis:

Model S-76A. S-76B. S-76C Based on 14 CFR §§ 21.115 and 21.101, the certification basis for the installation of Universal Avionics Systems Corporation (UASC) Software Control Number (SCN) 31.X in UASC Cockpit Display Computer (UCDC) P/N 3040-05-() in Sikorsky Models S-76A. S-76B. S-76C helicopters is as follows:

Regulations at the latest amendment 29-1 through 29-47:

**29.1301, 29.1309, 29.1353, 29.1357. 29.1381, 29.1529, 29.1555, 29.1585 -- END--**

FAA Form 8110-2 (5/14) Page 3 of 3

## Every issue (2)

- September 13, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/35/4f/354ff05687eb3a771d7ee6b2b20aeb700e0aa90c8f0100dc1572965e34b88a9a)
- August 1, 2007: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/e3/95/e395cb5424a06a8e998d20b71eac8bc5317a97c5199e1631a9982f7a108310b9)

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