# STC SA10210SC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Blackhawk Modifications Inc., United States
- Description: Installation of Pratt & Whitney Canada PT6A-135A engines and Hartzell HC-E4N-3N/D8990SK propellers with B. F. Goodrich electric de-ice boots.
- Applied: July 15, 2003
- Status date: January 12, 2012
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 25
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20)
- Certificate PDF: https://openairdocs.org/files/sha256/62/57/6257116f64c7d80877552d5fcc7a2bf1c934d0efa185a4c043be79c25158ee6a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2F7B2D45179E7F6862579C10055C55D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA10210SC

## ADs that name it (0)

None.

## Approved models (1)

- Hawker Beechcraft Corporation C90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))

## 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.

This certificate issued to: Blackhawk Modifications, Inc.

7601 Karl May Drive Waco, TX 76708

Part 3 of the Civil Air Regulations.

Original Product - Type Certificate Number: 3A20 Make: Raytheon Aircraft Co.

Model: C90

Installation of Pratt & Whitney Canada PT6A-135A engines and Hartzell HC-E4N-3N/D8990SK propellers with BF Goodrich electric de-ice boots in accordance with “Engine Installation No. 19651001,” Rev D, dated January 22, 2004 or later FAA approved revision and the Airplane Flight Manual Supplement dated January 30, 2004 or later FAA approved revision.

1) Compatibility of this design change with previously approved modification must be determined by the installer.

2) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

3) The Pratt & Whitney Canada PT6A-135A engines are limited to 1520 ft-lbs torque or 550horsepower.

Date reissued: May 14, 2004; October 8, 2004; November 16, 2006; January, 12, 2012

Original signed by Steve Litke ( Signature) Steven C. Litke Program Manager Wichita Aircraft Certification Office (Title)

Date of application: July 15, 2003 Date of issuance: January 30, 2004

## Every issue (4)

- January 12, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/62/57/6257116f64c7d80877552d5fcc7a2bf1c934d0efa185a4c043be79c25158ee6a)
- November 16, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/9a/bd/9abd428fd510f5b119d9805700e30a5c73462872d3fe86982d4bd211f356610b)
- October 8, 2004: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/30/f1/30f16455b7c544a8ad2d38cde7c265fdc6578f7f803fe831534a0c889e096844)
- January 30, 2004: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/37/c8/37c861e0f489a659888d4807901c1a99de63be34102cf56b22c156b6d857ee07)

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