# STC SA4-971

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Symons Engineering, United States
- Description: Installation of 20 gallon auxiliary fuel tank in baggage compartment.
- Applied: November 9, 1959
- Status date: March 25, 1960
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 1A15](https://openairdocs.org/tcds/1A15)
- Certificate PDF: https://openairdocs.org/files/sha256/76/1c/761cb5deac76649543d3be8a377a582cca55213120c53d96d647fc2c709bd1c0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B52694BF043485E286257F47006FF271.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4-971

## ADs that name it (0)

None.

## Approved models (1)

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

## What the certificate says

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

**FORM ACA-2417 VIL EMOTES 5 COMMERCEN (7-56)**

FEDERAL AVIATION AGENCY Supplemental Type Certificate

1. NAME AND ADDRESS OF APPLICANT LA- 035.2 Form Approved, Budget Bureau No. 41-R1823 INSTRUCTIONS - Submit in triplicate to local CAA Aviation Safety Agent. Copy will be returned to applicant upon issuance.

20 Supplemental Type Certificate APPLIED FOR:

Symons Engineering AIRCRAFT ENGINE PROPELLER Box 90002 Airport Station ORIGINAL MODEL DESIGNATION Los Angeles 90, California FACE NEW MODEL DESIGNATION (If desired) None

3. DESCRIPTION OF CHANGE Installation of 20 gallon auxiliary fuel tank in the baggage compartment in accordance with Symons Engineering Installation Instructions = Piper-2h series, 20 gallon fuel talk, Drawing No. SI-116 and SI-116A, dated July 1, 1959.

IMITATION OF APPLICABILITY: This approval should not be extended to other specific ai: planes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane.

OPRATING LIMITATIONS: This modification approved for installation on PA-2h series aircraft S/N PA-24-l and PA-2h-103 and subsequent only.

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

b. WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR 1.55)? * YES - NO

5. SIGNATURE AND TITLE OF APPLICANT (21 number 21br 37 G 534-2161 атона

SIGNATURE March 25, 1960 DATE OF APPLICATION TITLE

**6. TO BE COMPLETED BY CAA FAA**

NATURE AND LOCATION OF DATA Forms ACA-1600 and 337, photographs, sealed copy of Symons Engineering Parts List No. 9000 and Installation Instructions dated 7-1-59 are on file at the Aircraft Engineering Division, Region IV, Los Angeles 45, California.

Certification Basis: CAR 3.

Symons Engineering Airplane Flight Manual Supplement (dated March 30, 1960).

to Piper FAA approved Flight Manual is required as part of this installation.

ORIGINAL TYPE CERTIFICATE NO. CAA_ APPROVAL FAA ORIGINAL SIGNED 9% CHABLES R. HAWKS 1415 Supplemental Type Certificate NO. W. A. Klikoff

SIGNATURE _SAL-971

JATE OF APPROVAL Chief, Aircraft Engineering Division November 9, 1959(Revised 3-25-601) COMM- DC 32484 FORM ACA-2417 (7-56)

## Every issue (1)

- March 25, 1960: Amended, Current. [certificate](https://openairdocs.org/files/sha256/76/1c/761cb5deac76649543d3be8a377a582cca55213120c53d96d647fc2c709bd1c0)

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