# STC SA2122WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Javelin Conversions Inc., United States
- Description: Installation of two Lycoming TIO-540-A2B turbocharged engines and two Hartzell HC-E3YR-2/C8468-6R propellers; or installation of Lycoming TIO-540-J2BD or N2BD and LTIO-540-J2BD or N2BD engines with Hartzell HC-E3RY-2F/FC8468-6R or -8R and HC-E3YR-2LF/FJC8468-6R or -8R propellers and gross weight
- Applied: February 13, 1970
- Status date: July 31, 2012
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/44/02/4402f960026917cd027084a622ae7e9695ed3577861e8c519cea0a16043e42f7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DFD535DCBE253DB986257AA7005665CF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2122WE

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company 320C ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320E ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

## 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 3 of the Civil Air Regulations.

Installation of two Lycoming TIO-540-A2B turbocharged engines and two Hartzell HC-E3YR-2/C8468-6R propellers; or installation of Lycoming TIO-540-J2BD or –N2BD and LTIO-540-J2BD or –N2BD engines with Hartzell HC-E3RY-2F/FC8468-6R or -8R and HC-E3YR-2LF/FJC8468-6R or -8R propellers and gross weight as shown in the appropriate AFM Supplements listed below, according to Drawing Summary Revision S, EO.31072A dated September 9, 1974, and EO.32E-1 dated October 8, 1974.

FAA Approved Airplane Flight Manual Supplement dated March 10, 1970, or October 3, 1974, is required for Cessna Model 320E; Supplement dated March 9, 1973, is required for Cessna Model 320C. Cessna 320C approved with TIO-540-A2B engines only; Cessna 320E approved with ITO-540-J2BD or –N2BD and LTIO-540-J2BD or –N2BD only. 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 a product, the holder must give the other person written evidence of that permission.

Javelin Conversions, Inc.

8421 Nelms Street Houston, Texas 77061 3A25 Make : Cessna Model : 320C, 320E Date of application : February 13, 1970

Date of issuance : September 15, 1975

Date reissued : August 19, 1991, June 5, 1996, July 31, 2012

( 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)

- July 31, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/44/02/4402f960026917cd027084a622ae7e9695ed3577861e8c519cea0a16043e42f7)

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