# STC SA4-1402

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Lockheed Aircraft Service Co, United States
- Description: Reinforcing structure.
- Status date: February 16, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A17](https://openairdocs.org/tcds/4A17)
- Certificate PDF: https://openairdocs.org/files/sha256/06/6f/066f57898b2f4652ca326f31ac8e96a494532391da2321a96c3ee8a09738dce5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1058BF61856CDBC8862575FA00709AA2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-1402

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation 1649A-98 ([TCDS 4A17](https://openairdocs.org/tcds/4A17))

## What the certificate says

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

**FS - 4102 FEDERAL AVIATION AGENCY FORM APPROVED, BUDGET BUREAU NO. 04-R015**

**INSTRUCTIONS - SUBMIT IN TRIPLICATE TO LOCAL FAA FLIGHT STANDARDS INSPECTOR.**

Supplemental Type Certificate COPY WILL BE RETURNED TO APPLICANT UPON

**ISSUANCE**

1. NAME AND ADDRESS OF APPLICANT 2- Supplemental Type Certificate APPLIED FOR:

Lockheed Aircraft Service, Inc.

Ontario, California AIRCRAFT ENGINE PROPELLER

ORIGINAL MODEL DESIGNATION L1649A (LOCKHEED) NEW MODEL DESIGNATION (If desired) L1649A/02

3. DESCRIPTION OF CHANGE Install reinforcing structure to permit operation at higher zero fuel and landing weights under SR411A.

Structural installation in accordance with LAS Drawing List No. 4012716, dated January 17, 1961.

Limitation on Applicability: The approval of this change in Type Design applies only to Lockheed Model 16u9A airplanes previously modified in accordance with STC's Nos. SAl-1215 or SAl-1295. This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated unless it is determined push saved tRi gabong vill introduce no adverse effoct upon thre- MILL 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 Lewis SIGNATURE 17 January 1961 Manager, Engineering Department Date of Application: TITLE

6. To be Completed by FAA

NATURE AND LOCATION OF DATA Engineering and Manufacturing Branch, FAA, and Lockheed Aircraft Service, Inc., Ontario, California.

Certification Basis: Refer to Aircraft Specification 4Al7 Certification Basis as listed except Amendment 4b-3, paragraphs 2l through 33 and 39 are no longer applicable.

**ORIGINAL TYPE CERTIFICATE NO. FAA APPROVAL 4A17 ORIGINAL SIGNED BA**

SABLES R HAWES Supplemental Type Certificate NO.

Charles R. Hawks SIGNATURE SA 4-1402

DATE OF APPROVAL February 16, 1960 Chief, Engineering and Manufacturing Branch TITLE * U.S. GOVERNMENT PRINTING OFFICE: 1959 0-509657 FORM FAA-2417 (5-59)

## Every issue (1)

- February 16, 1960: Issued, Current. [certificate](https://openairdocs.org/files/sha256/06/6f/066f57898b2f4652ca326f31ac8e96a494532391da2321a96c3ee8a09738dce5)

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