# STC SA03446AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: MT-Propeller Entwicklung GmbH, Germany
- Description: Installation of three bladed,  hydraulically operated, constant speed propeller MT-Propeller propeller model No. MTV-9-B/198-52 with spinner
- Applied: December 1, 2005
- Status date: May 25, 2007
- Product: Aircraft, Small Airplane
- Certification basis: Part 21, Part 23
- Foreign approvals: EASA STC 10071814
- Data sheets: [TCDS A3SO](https://openairdocs.org/tcds/A3SO)
- Certificate PDF: https://openairdocs.org/files/sha256/75/73/75735e1394cf12ba85de2d2eb7e354b485740102b5aefb5feaa6f48de97d3338
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126270978620260316185416.0001
- DRS record last changed: March 16, 2026
- Page: https://openairdocs.org/stc/SA03446AT

## ADs that name it (0)

None.

## Approved models (4)

- Piper Aircraft Inc. PA-32R-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (HP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-301 (SP) ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32RT-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- May 25, 2007: Issued, Current. [certificate](https://openairdocs.org/files/sha256/75/73/75735e1394cf12ba85de2d2eb7e354b485740102b5aefb5feaa6f48de97d3338)

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