# STC SA3609SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Fisher Air Maintenance L.L.C., United States
- Description: Installation of Avco Lycoming IO-720-A1B engine and Hartzell HC-C3YR-1(R)F/F8475R-O propeller.
- Applied: December 6, 1985
- Status date: March 1, 2009
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A9CE](https://openairdocs.org/tcds/A9CE)
- Certificate PDF: https://openairdocs.org/files/sha256/1b/45/1b4598785c922a46b4a9be2bfcdcf50b6c5ad8e994d55046a2b43ca1f7f47349
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/522A5A0E6BD4425986257681004EAFC8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3609SW

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company A188B ([TCDS A9CE](https://openairdocs.org/tcds/A9CE))
- Cessna Aircraft Company T188C ([TCDS A9CE](https://openairdocs.org/tcds/A9CE))

## 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.

Part 21 of the Federal Aviation Regulations.

Description of Type Design Change: Installation of AVCO Lycoming IO-720-AIB engine and Hartzell HC-C3YR-1RF/F8457R-O propeller in accordance with Nichols Aviation, Inc., Drawing List No. NAI-100, Rev. 2, dated June 17, 1988, or later FAA approved revision.

Limitations and Conditions: 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 the product, the holder shall give the other person written evidence of that permission. FAA Approved Flight Manual Supplement, dated May 1, 1986, is required for the A188B. FAA Approved Flight Manual Supplement, dated June 28, 1988, is required for the T188C.

Fisher Air Maintenance, L.L.C.

4579 Township Road 126 Cardington, OH 43315 A9CE Make: Cessna Model: A188B and T188C

Date of application: December 06, 1985

Date of issuance: May 05, 1986

Date reissued: 06/10/87; 06/09/97; 10/31/08; 03/01/09

Date amended: June 28, 1988 Rev. 1

( Signature) S. Frances Cox Manager, Special Certification Office Southwest Region

( Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

## Every issue (1)

- March 1, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1b/45/1b4598785c922a46b4a9be2bfcdcf50b6c5ad8e994d55046a2b43ca1f7f47349)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.