# STC SA09872AC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: BS Designs, Inc., United States
- Description: Installation of Hartzell Propeller, Inc. Model HC-E4N-5KL/JNC10904(B), De Ice, or Model HC-E4N-5KL/JNC10904, Non-De
Ice, carbon composite, four blade, constant speed, propeller
- Applied: July 18, 2016
- Status date: February 16, 2023
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A37CE](https://openairdocs.org/tcds/A37CE)
- Certificate PDF: https://openairdocs.org/files/sha256/8a/df/8adf53603e7076131c9406a992c3f00b04311129ef87fdd1b930d9a9f7a3b6ea
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169530830420250729181900.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA09872AC

## ADs that name it (0)

None.

## Approved models (2)

- Textron Aviation Inc. 208 ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))
- Textron Aviation Inc. 208B ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))

## 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.

SA09872AC BS Designs, Inc.

111 Private Road 2218 Decatur, TX 76234 Part 23 the Federal Aviation Regulations A37CE Textron Aviation, Inc.

208 and 208B Caravan

(See Continuation Sheet 3 of 3) July 18, 2016 Febuary 16, 2023 April 21, 2017 S. Frances Cox Acting Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service 3

SA09872AC 3

SA09872AC Date of Issuance: April 21, 2017 Date of Reissuance: February 16, 2023

Description of Type Design Change (continued):

Installation of Hartzell Propeller, Inc. Model HC-E4N-5KL/JNC10904(B), De Ice, or Model HC-E4N-5KL/JNC10904, Non-De Ice, carbon composite, four blade, constant speed, propeller in accordance with BS Designs, Master Data List, Document No.

BSD-MDL-208-01, Rev. B1, dated April 20, 2017, or later FAA Approved revision. The Airplane Flight Manual Supplement (AFMS) dated April 11, 2017, or later FAA Approved revision is required. The Instructions for Continued Airworthiness (ICA) Document No. BSD-ICA-208-01, Rev. IR, dated April 11, 2017, or later FAA accepted revision is also required.

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

The installation of the Honeywell International, Inc. TPE331-12JR-704TT turboprop engine is required, in accordance with STC SA10841SC. The Hartzell HC-E4N-5KL/JNC10904 propeller diameter limits are 110 to 109.5 inches. Honeywell Service Bulletin No. TPE331-72-2287, Rev. 0, dated April 19, 2017, or later edition is required to convert the TPE331-12JR-702TT to a TPE331-12JR-704TT turboprop engine.

-END- 3 3

## Every issue (2)

- February 16, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8a/df/8adf53603e7076131c9406a992c3f00b04311129ef87fdd1b930d9a9f7a3b6ea)
- April 21, 2017: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/65/44/654404772d0165b35d3ea75c11b5d0117709a276ffc15911600c439f78a66ad1)

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