# STC SA1744SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Restoration Corporation, United States
- Description: Installation of two nacelle locker(left side and right side) metal fuel tanks (22.6 gallons each).
- Applied: January 13, 1984
- Status date: May 18, 2015
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A20SO](https://openairdocs.org/tcds/A20SO)
- Certificate PDF: https://openairdocs.org/files/sha256/f8/36/f836df637256754c87066637e6f093d3453de874b7d418529f5bc5562206be6f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1E5EF8C75CF7D1AB86257E4A005831CB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1744SO

## ADs that name it (0)

None.

## Approved models (3)

- Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))

## 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.

N umber SA1744SO This certificate, issued to : Aircraft Restoration Corp 3410 West 1010 South Provo, Utah 84601 Part * of the Federal Aviation R egulations.

*CAR 3 effective May 15, 1956 through Amendment 3-8 effective 12/18/62.

Original Product T ype Certificate N umber: A2OSO M ake: Piper M odel : PA-31, PA-31-325, PA-31-350 Description of the Type Design Change :

Installation of two nacelle locker (left side and right side) metal fuel tanks (22.6 gallons each), in accordance with Global Aeronautics Master Drawing List dated 1/20/85, or later FAA approved revision.

This approval should not be extended to other aircraft of this model on which other previously approved modifications and incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that airplane. FAA approved airplane flight manual supplement dated February 6, 1985 is required for each installation.

Date of application: January 13, 1984 Date reissued: November 12, 1988; May 18, 2015

Date of issuance: February 8, 1985 Date amended:

B y direction of the A dministrator

(Signature) Greg K. Johnson Program Manager Denver Aircraft Certification Office (Title)

United States of America Department of Transportation_ Federal Aviation Administration Supplemental Type Certificate N umber SA1744SO Transfer Endorsement

N umber SA1744SO Continuation:

## Every issue (1)

- May 18, 2015: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f8/36/f836df637256754c87066637e6f093d3453de874b7d418529f5bc5562206be6f)

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