# STC SA2520SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Mr. Jim Johnson, United States
- Description: Installation of a pilot's left side door and relocation of power plant and elevator trim controls.
- Applied: October 25, 1988
- Status date: May 15, 2008
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- Certificate PDF: https://openairdocs.org/files/sha256/63/ab/63abf8a7a5bbed0585ee7b66662a9ec3eafeb9eb6202a862cd05c778ae14179f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FCE33E23CD296A688625745100562A94.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2520SO

## ADs that name it (0)

None.

## Approved models (6)

- The New Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18A ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18AS-125 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18AS-135 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18AS-150 ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18S ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA252050 This certificate issued to: Mr. Jim Johnson P.O. Box 22 114 West A Street Shoshone, Idaho 83352 Surt 3t of the Federal Aviation Pregulations. * Part 410 of the Regulations of the Administrator applies Original Product -- Type Bertificate Number 1A2 Make: Piper Model: PA-18, PA-18S, PA-18A, and PA-18AS Description of Type Design Change: Installation of a pilot's left side door and relocation of power plant and elevator trim controls in accordance with Hindall Products, Inc. Report R-8821, dated October 10, 1988, or later FAA approved revision.

This approval should not be extended to other airplanes of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those previously approved modifications will produce no adverse effect upon the airworthiness of that airplane. This determination should include consideration of significant changes in weight distribution such as an increase in fixed disposable weight in the fuselage.

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 25, 1988 (original issue) Date Reissued: May May 2008; May May 2008 Date of Issuance: March 13, 1989 (original issue) Date Amended:

FEDERAL AVIATION By Direction of the Administrator _ for (Signature) Melvin D. Taylor, Manager TOMINISTRATO Atlanta Aircraft Certification Office (Title)

FAA FORM 8110-2-1(10-69) PAGE 1 o: 2 PAGES This certif icate may be transferred in accordance with FAR 21.47.

## Every issue (2)

- May 15, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/63/ab/63abf8a7a5bbed0585ee7b66662a9ec3eafeb9eb6202a862cd05c778ae14179f)
- May 5, 2008: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/73/82/7382a4ec6a9733b6b82f2c2beda2cbd5abf6f10bccf1b0e78328a605221e0417)

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