# STC SA2020WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Trinkle and Boys, United States
- Description: Installation of Wright R-975-11 engine, Hamilton Standard 2D30-6101A-12 propeller, and associated items
- Applied: March 14, 1969
- Status date: October 8, 1969
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-743](https://openairdocs.org/tcds/A-743)
- Certificate PDF: https://openairdocs.org/files/sha256/26/46/26460fdc595a4fa66b90590e7f9449e79c92404a7f71aace9af8babe37b143e5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A79D752C65A5A6B686257A160072736B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2020WE

## ADs that name it (0)

None.

## Approved models (1)

- Boeing Airplane Company Wichita Division A75N1 (Army PT-17; -17A; Navy N2S-1; -4) ([TCDS A-743](https://openairdocs.org/tcds/A-743))

## What the certificate says

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

Federal Aviation Agency Supplemental Type Certificate Number 8A202013 This certificate issued to: Trinkle and BOYS 31244 South Highway 33 Tracy, California 95376 Part sa of the FREe?

Regulationa Original Product - Type Bortificato Number: A-743 Make: BOEING Model: A75NL, N61931, Serial No. 75-2549 Description of Type Design Change:

Installation of Wright R-975-11 engine, Hamilton Standard 2D30-6101A-12 propeller, and associated items in accordance with Trinkle and Boys Installation Procedure Sheet No. 1.P.S.-1 dated June 2, 1969.

Data not suitable for reproduction of installation in other aircraft; therefore, they are satisfactory for Boeing A75N, N61931, Serial 75-2549 only. No additional modifications of this type are to be approved solely by reference to Supplemental Type Certificate or to the data subaitted therefor.

Supplemental Type Certificate Addendum Number SA2020WE is a portion of this STC and is required to be included in the aircraft permanent records.

47.

**FAA FORM 8110-2 (1-66) 0052-657-6000**

## Every issue (1)

- October 8, 1969: Issued, Current. [certificate](https://openairdocs.org/files/sha256/26/46/26460fdc595a4fa66b90590e7f9449e79c92404a7f71aace9af8babe37b143e5)

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