# STC SA313SW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Mitchell Industries Inc, United States
- Description: Installation of Mitchell Pitch Trim System  Model AK124.  Installation of Mitchell Pitch Trim System  Model AK124R.
- Applied: July 24, 1964
- Status date: August 28, 1964
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A15](https://openairdocs.org/tcds/1A15), [TCDS A1EA](https://openairdocs.org/tcds/A1EA)
- Certificate PDF: https://openairdocs.org/files/sha256/53/91/539149e8386a061d4507571600b58a51a87e392636a1f4a62ac7ec005823cffc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F2A3EB0E47AD395286257EDE00620A09.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA313SW

## ADs that name it (0)

None.

## Approved models (4)

- Piper Aircraft Inc. PA-24 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-24-250 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-24-400 ([TCDS 1A15](https://openairdocs.org/tcds/1A15))
- Piper Aircraft Inc. PA-30 ([TCDS A1EA](https://openairdocs.org/tcds/A1EA))

## What the certificate says

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

FEDERAL AVIATION AGENCY Supplemental Type Certificate

1. NAME AND ADDRESS OF APPLICANT Mitchell Induatries, Inc.

Municipal Airport P.O. Box 610 Mineral Wells, Texas

**3. DESCRIPTION OF CHANGE FORM APPROVED, BUDGET BUREAU NO. 04-R015**

**INSTRUCTIONS - SUBMIT IN TRIPLICATE TO LOCAL FAA FLIGHT STANDARDS INSPECTOR.**

**COPY WILL BE RETURNED TO APPLICANT UPON**

**ISSUANCE**

2. Supplemental Type Certificate APPLIED FOR:

AIRCRAFT ENGINE PROPELLER ORIGINAL MODEL DESIGNATION PA-30 Piper PA-24, PA-24-250, PA-24-400.

NEW MODEL DESIGNATION (If demired) None Installation of Mitchell Pitch Trim System Model AK124 in accordance with Mitchell Industries, Inc, Bulletin No. 212 dated 5-13-64 and subsequent F. A. A.

approved bulletins and/or supplements. Installation of Mitchell Pitch Trim System Model AK124R in accordance with Mitchell Industries, Inc. Bulletin No. 244 dated 7-24-64.

WILL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS? YES • NO

b. WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR 1.55)? _ NO

5. SIGNATURE AND TITLE OF APPLICANT Rev. 7-24-64 SIGNATURE 11-4-64 Vice President Date of Application: TITLE

6. To be Completed by FAA

NATURE AND LOCATION OF DATA Data listed in Item 3 above, TIR A439SWS, TIR A463SWS & TIR A493SWS (See STC SA598W file) on file at SW-210.

Applicable CAR's same as original certification.

ORIGINAL TYPE CERTIFICATE NO. FAA APPROVAL LA15 & ALKA Supplemental Type Certificate NO.

SIGNATURE SA3138W try. H. Slaughter

DATE OF APPROVAL 12-31-63 Revised: 8-28-64 Chief, Engineering and Manufacturing Branch RINTING OFFICE: 1959 0-509657 FORM FAA-2417 (5-59)

## Every issue (1)

- August 28, 1964: Amended, Current. [certificate](https://openairdocs.org/files/sha256/53/91/539149e8386a061d4507571600b58a51a87e392636a1f4a62ac7ec005823cffc)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.