# STC SA4-608

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Dow-Elco Inc, United States
- Description: Engine mount core assemblies DE-643-1 on Wright TC18 Series engines.
- Applied: August 20, 1958
- Status date: September 23, 1958
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A17](https://openairdocs.org/tcds/4A17), [TCDS 6A5](https://openairdocs.org/tcds/6A5), [TCDS 4A10](https://openairdocs.org/tcds/4A10)
- Certificate PDF: https://openairdocs.org/files/sha256/9e/bd/9ebd3633dc355000635ba26066d55c003393c734c8582f96e56081c12cfef245
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/441D22FEB0ECA75B862579B2005BFC6F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-608

## ADs that name it (0)

None.

## Approved models (3)

- Lockheed Aircraft Corporation 1049 Series ([TCDS 6A5](https://openairdocs.org/tcds/6A5))
- Lockheed Aircraft Corporation 1649A-98 ([TCDS 4A17](https://openairdocs.org/tcds/4A17))
- McDonnell Douglas Corporation DC-7 Series ([TCDS 4A10](https://openairdocs.org/tcds/4A10))

## What the certificate says

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

LA -236 FORK ACA-2817 U.S. DEPARTMENT OF COMMERCE (7-56) CIVIL AERONAUTICS AOMINISTRATION Form Approved, Budéct Bureau No. 41-81923 INSTRUCTIONS - Submit in triplicate to lo- Supplemental Type Certificate cal CAA Aviation Safety Agent. Copy WIll be returned to applicant upon issuance.

1. NAME AND ADDRESS OF APPLICANT Supplemental Type Certificate APPLIED FOR:

DON RICO 1313 V. Olympic Dvd.

Montebello, California

AIRCRAFT ENGINE PROPELLER ORIGINAL MODEL DESIQUATION DOUZiaS DO-7, 78, 70 and Lockheed 10199, 2019H & 16194 NEW MODEL DESIGNATION (II desired) None

3. DESCRIPTION OF CHANGE Installation of DovElco Manufactured Engine Mount core assemblies DE 6I3-1 for installation on wright TOlS series engines approved by appropriate Of Aircraft Specification.

LIMITATTON ON APPLICASTLTTY:

This approval should not be extended to other specific airplanes of this model on which other previously approved nodifications are incorporated, unless it is determined that the interrelationship betucen this change and any of those other previously approved modifications will introduce no adverse effect upon the airvorthiness of that afrplane.

IL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS! YES I NO

b. WILL PARTS BE MANUFACTURED FOR SALE (Eef. CAR 1.55)1 LA YES NO

**5. SIGNATURE AND TITLE OF APPLICANT**

SEGNATURE A1/US2 20x 1958 President Date of Application: TITLE

**6. TO BE COMPLETED BY CAA**

NATURE AND LOCATION OF DATA Dos Fleo Print No. DE 613-1 and Engineering Report No. 73220. Data on fle in GAA, Afrcraft Engineering Division, Region L office.

Certification Basis : Douglas DO-7, 73 & 70 = OAR as amended July 20, 1950 & Amends ments 4b-1, do 3 - raragraph 20.302

(a)(b) and (c) or AbeL and lb 2.

Lockheed 1019U & 1019H- CAR ub as amended October 1, 1919.

Lockheed 1619A * CAR Lb as amended December 33, 1953.

BOUGLAS BUS CERTICATE MO. - 4410 CAA APPROVAL ORIGINAL SIGNET 8Y LOCKHEED 20190 & 10198 DAS CHARLES & HAVES 16098 Supplemental Type Certificate NO. Н. А. Кікої SAL-508 SIGNATURE

DATE OF APPROVAL Chief, Aireraft Engineering Division September 23, 1958 TITLE COMM- DC 32484 FORM ACA-2817 17-561

## Every issue (1)

- September 23, 1958: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9e/bd/9ebd3633dc355000635ba26066d55c003393c734c8582f96e56081c12cfef245)

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