# STC SA3965NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: ROBERT W. MURRAY, United States
- Description: Installation of a de-icing system on the Dunlop P/N ACA1192 engine inlet cowl .
- Applied: September 2, 1988
- Status date: December 20, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A41EU](https://openairdocs.org/tcds/A41EU)
- Certificate PDF: https://openairdocs.org/files/sha256/91/e9/91e9f5d849aa4047a39d1129758559b4fe8f6708f58e6a7f863fb5a1a0a56cb5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/415E80D982C5CEF18625797B0056EE6F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3965NM

## ADs that name it (0)

None.

## Approved models (1)

- Short Brothers PLC SD3-60 ([TCDS A41EU](https://openairdocs.org/tcds/A41EU))

## 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.

This Certificate issued to ROBERT W. MURRAY 24196 Zancon Mission Viejo, California 92692 Part 25 of the Federal Air Regulations.

A41EU

Short Brothers Limited

SD3-60 Description of Type Design Change : Installation of a de-icing system on the Dunlop P/N ACA1192 engine inlet cowl in accordance with Montgomery Systems Tech Drawing 46514, Revision A, dated February 15, 1989, or later FAA approved revision, as an alternate to the Dunlop de-icing system currently approved.

Limitations and Conditions: This approval should not be extended to other specific airplanes of this model on which other previously appr oved modifications are incorporated, unless it is determined that the interrelationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse effect on the airworthiness of tho se aircraft. If the holder agrees to permit another person to use this certificate to alter the product, th e holder shall give the other person written evidence of that permission.

Date of application : September 2, 1988

Date of issuance : February 22, 1989

Date reissued : August 31, 2006, December 20, 2011

Date amended : August 31, 2006

( Signature) Haifa Haj-Eid Supervisor, Technical and Administrative Support Staff Los Angeles Aircraft Certification Office ( Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

## Every issue (2)

- December 20, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/91/e9/91e9f5d849aa4047a39d1129758559b4fe8f6708f58e6a7f863fb5a1a0a56cb5)
- August 31, 2006: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/31/33/31337b5b67442feb8c17995bfa15455209de017e950ab363e440a16b1a046ac5)

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