# STC SA3-578

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Development Co, United States
- Description: Installation of speed kit.
- Applied: September 18, 1960
- Status date: January 30, 1996
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- Certificate PDF: https://openairdocs.org/files/sha256/79/25/7925b87b52bb6eda3477e37ac6d0284f55690b3e2b8742c6af75808aa3c549ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/43E93862BD3383AA862580280073D022.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3-578

## ADs that name it (0)

None.

## Approved models (4)

- The Cessna Aircraft Company 180 ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180A ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180B ([TCDS 5A6](https://openairdocs.org/tcds/5A6))
- The Cessna Aircraft Company 180C ([TCDS 5A6](https://openairdocs.org/tcds/5A6))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3-578 This certificate issued to: Aircraft Development Co.

1220 Red Oak Ct.

Troy, MO 63379 Certifies that the change in the type design for the following produd with the limitations and condition's therefor as specified hereon meet's the airworthiness requirement's of Part 3 of the civil Air Regulationsh Original Product - Type Certificate Number: 5A6 Make: Cessna Model: 180, 180A, 180B, 180C Description of Type Design Change: Speed kit for Cessna Model 180 aircraft per R & E Aircraft Parts List No. 180-100, and Installation Instructions 117 (7 sheets), both dated April 1, 1960, revised October 26, 1960.

Limitations and Conditions: Compatibility of this design change with previously approved modifications must be determined by the installer.

Date of Application: September 18, 1960 Date Reissued: May 29, 1981; January 27, Date of Issuance: November 21, 1960 1993; January 30, 1996 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Ronald K. Rathgelu (Signature) Ronald K. Rathgeber TOMNISTRATOS Asso. ACO Mgr. Airframe & Services Wichita Aircraft Certification office (Title)

## Every issue (1)

- January 30, 1996: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/79/25/7925b87b52bb6eda3477e37ac6d0284f55690b3e2b8742c6af75808aa3c549ae)

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