# STC SA02550NY

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: MT- Propeller Entwicklung GmbH, Germany
- Description: Installation of a 4-blade MT-Propeller Models MTV-16-I-E-C-F/CF225-37a on a Cessna 421C airplanes.
- Applied: March 18, 2008
- Status date: July 15, 2008
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE)
- Certificate PDF: https://openairdocs.org/files/sha256/49/18/49180a0545b6e35b195534457dfeee2b000cdb61d01aeca6b88d262f3fb94f64
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F01FEF6525A678E98625749B006A44AF.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA02550NY

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 421C ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))

## 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

Part 3 of the Civil Air Regulations.

Installation of a 4-blade MT-Propeller Models MTV-16-I-E-C-F/CF225-37a on a Cessna 421C airplanes. Data Required: (1) Airplane Flight Manual Supplement No. E-1584, dated December 18, 2007. (2) Instructions for Continued Airworthiness E-1586, dated November 23, 2007 and Installation Instructions E-1585, dated November 23, 2007.

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

2. 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

MT- Propeller Entwicklung GmbH FlugplatzstraBe 1 94348 Atting, Germany No. A7CE Make: Cessna Model: 421C Date reissued:

( Signature) Anthony Socias Manager New York Aircraft Certification Office

( Title)

Date of application: March 18, 2008

Date of issuance: July 15, 2008

## Every issue (1)

- July 15, 2008: Issued, Current. [certificate](https://openairdocs.org/files/sha256/49/18/49180a0545b6e35b195534457dfeee2b000cdb61d01aeca6b88d262f3fb94f64)

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