# STC SA3-160

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Jerry M. Strunk, United States
- Description: Complete conversion of electrical system, engine and aircraft, from 12v to 24v.
- Applied: October 31, 1957
- Status date: November 29, 2006
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- Certificate PDF: https://openairdocs.org/files/sha256/79/25/7925fc1c632b64efe0d8d62acb6edcdf789f6330af3622dbb083266f69c279ed
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EC6CD683AEB48426862588B60076BA72.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-160

## ADs that name it (0)

None.

## Approved models (1)

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

## 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.

Department of Transportation -- Federal Aviation Administration Supplemental Type Certificate Number SA3-160 This certificate issued to Jerry M. Strunk 1212 Lewis Street Ottumwa, IA 52501

Part 3 of the Civil Air Regulations.

(See Aircraft Specification No. 5A6 for complete certification basis)

Original Product--Type Certificate Number: 5A6 Make: Cessna Model: 180

Description of Type Design Change: Complete conversion of electrical system, engine and aircraft, from 12v to 24v. Installed additional battery box (Cessna Part #0513011-9) attached to structure in the same manner as the original battery box. Batteries are connected in series.

See letter from Continental Motors Corporation (Attachment #1) See Wiring Diagram (Attachment #2) See Battery Box Installation Diagram (Attachment #3) See ACA-337 dated 10/31/57 (G. Richard Marsh, A & E #156867)

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. CAM 3.681-2 should be complied with if additional electrical equipment is installed.

3. 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.

Date of application : October 31, 1957

Date of issuance : January 28, 1958

Date reissued : March 13, 1989;

November 29, 2006 Date amended : April 22, 1958 By direction of the Administrator

(Signature) Thaddeus D. Krolicki Jr.

Manager, Propulsion Branch Chicago Aircraft Certification Office

Number SA3-160

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

## Every issue (2)

- November 29, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/79/25/7925fc1c632b64efe0d8d62acb6edcdf789f6330af3622dbb083266f69c279ed)
- November 29, 2006: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/c4/7a/c47a61fba9e9579682a3510e6f89dcb27d47587c033c25882ed21f272204a7c0)

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