# STC SA4-342

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Pacific Airmotive Corp, United States
- Description: ONE ONLY STC, SN 1416: Installation of the AH-4 Decelostat Brake Unit.
- Applied: November 29, 1957
- Status date: November 25, 1957
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS ATC 683](https://openairdocs.org/tcds/ATC%20683)
- Certificate PDF: https://openairdocs.org/files/sha256/15/e5/15e5884fa5902fcce5d0bd0e7f8d64c8a7c71d93384418da1e45dfba4cbc2ccf
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0458100E51F37A8F86257F2B005E5C44.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-342

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Aircraft Corporation 14-N ([TCDS ATC 683](https://openairdocs.org/tcds/ATC%20683))

## 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.

"rcORM ACA-21l17U.S. DEPARTMENT OF COMMERCE (7-56) CIVIL AERONAUTICS ADMINISTRATION Form Approved, Bud~et Bureau No. 4J-RJ823 INSTRUCTIONS- Submit in triplicateto local CAA AviationSafety Agent. Copy will be returnedto applicantupon issuance.

2. SUPPLEMENTAL TYPE CERTIFICATE APPLIED FOR:

D PROPELLERo ENGINE ORIGINAL MODEL DESIGNATION lA>c

"'\) … 14

NEW MODEL DESIGNATION (If de. ired) n :~ [i]AIRCRAFT

1. NAME AND ADDRESS OF APPLICANT ,. DESCRIPTION OF CHANGE I t 11 ti of th ~ 10 tat od 1 1 _ N18138,! Ser •. No•. 1416 ~'. WILL DATA BE AVAILABLE FOR SALE OR RELEASE TO OTHER PERSONS?

WILL PARTS BE MANUFACTURED FOR SALE (Ref. CAR J.55)?

DYES DYES 00 NO [i] NO

5. SIGNATURE AND TITLE OF APPLICANT (/ ..:-----1./c '" , . / ?/tL

SI GNATURE Nov,25, 7

**DATE OF APPLICATION TITLE**

**6. TO BECOMPLETEDBY CAA**

NATURE AND LOCATION OF DATA PAC-B Dwga, No. DP-2048, DP-20 9-1-2; PAC Photo No. DP.ro48J located in th Aircraft E neeting Division, CAA, Region IV, Los eles, Calif'.

Certi.fication Basis I Bulletin 7 • D not uitabl for rep ction of insta.llation in other aircr it i satisfactory for Lockheed l-Iod' ::LL, 1813 I Serial o. 1L.l6 tional modific tion of tJ i type are to 00 approved solely by r Supplemental Type C nif cate or to the dat ubmitte th refor tJ therefo , only. No add:!..- ar nee to thi ORIGINAL TYPE CERTIFICATE NO. CAA APPROVAL 68 SUPPLEMENTAL TYPE CERTIFICATE NO. W. A. 101koff SIGNATURE .TE OF APPROVAL ov 29, 1957 Chief', lircr t eringDiv.l.

**TI TL E COMM'DC 32484**

## Every issue (1)

- November 25, 1957: Issued, Current. [certificate](https://openairdocs.org/files/sha256/15/e5/15e5884fa5902fcce5d0bd0e7f8d64c8a7c71d93384418da1e45dfba4cbc2ccf)

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