# STC SA01792SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hartzell Propeller Inc, United States
- Description: Installation of the Hartzell HC-C3YR-2UF/FC8468(A)(B,K)-6R propeller and the Hartzell C-3258 (P) spinner assembly
- Applied: July 6, 2007
- Status date: September 25, 2007
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/43/0f/430f03cfa2140be33a3f9f3aa2a8a1cd3aed55fa6d963a3473dafb47e550b10b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C39534BD4712E64186257369004F8690.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA01792SE

## ADs that name it (0)

None.

## Approved models (1)

- Twin Commander Aircraft Corporation 500 ([TCDS 6A1](https://openairdocs.org/tcds/6A1))

## 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.

Number SA01792SE This certificate, issued to Hartzell Propeller Inc.

One Propeller Place Piqua, Ohio 45356-2634 Part 3 of the Civil Air Regulations.

Original Product⎯Type Certificate Number: 6A1 Make: Twin Commander Model: 500

Description of the Type Design Change: Installation of the Hartzell HC-C3YR-2UF/FC8468(A)(B,K)-6R propeller and the Hartzell C-3258 (P) spinner assembly in the above model aircraft in accordance with Hartzell Installation Report AC500, Rev. N/C, dated July 1, 2007, or later FAA-approved revision to this document.

Limitations and Conditions: Approval of this change in type design applies to the above model only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationships between this change and any of those other previously approved modifications including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this certificate shall be maintained as part of the permanent records for the modified aircraft.

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.

Date of application: July 6, 2007 Date reissued:

Date of issuance: September 25, 2007 Date amended:

(Signature)

raft Certification Office Acting Manager, Seattle Airc (Title)

## Every issue (1)

- September 25, 2007: Issued, Current. [certificate](https://openairdocs.org/files/sha256/43/0f/430f03cfa2140be33a3f9f3aa2a8a1cd3aed55fa6d963a3473dafb47e550b10b)

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