# STC SA1982NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: ROBERT W. MURRAY, United States
- Description: Installation of a de-icing system on the Rolls Royce RK45524A engine inlet cowl.
- Applied: November 23, 1982
- Status date: December 20, 2011
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A1PC](https://openairdocs.org/tcds/A1PC)
- Certificate PDF: https://openairdocs.org/files/sha256/0e/01/0e01b160103195a2df60922c040ce1af4a8a7e1de3cafa67f8594ad096840d49
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F9E26142B0B9B6EC8625797B0056ED88.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1982NM

## ADs that name it (0)

None.

## Approved models (5)

- Mitsubishi Heavy Industries Ltd. YS-11 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-200 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-300 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-500 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))
- Mitsubishi Heavy Industries Ltd. YS-11A-600 ([TCDS A1PC](https://openairdocs.org/tcds/A1PC))

## 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 4b of the Civil Air Regulations. as listed under certificate basis of Type Certificate Data Sheet A1PC Original Product Type Certificate Number :

A1PC

Mitsubishi, Heavy Industries

YS-11, YS-11A-200, -300, -500, -600 Description of Type Design Change : Installation of a de-icing system on the Rolls Royce P/N RK45524 engine inlet cowl in accordance with Montgomery Systems Tech Drawings 46594, Revision N/C; 46595, Revision N/C; and 46596, Revision N/C, all dated November 28, 1982, or later FAA approved revision, as an alternate to the Dunlop deicing 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 : November 23, 1982

Date of issuance : June 21, 1983

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

Date amended : July 15, 1983, 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/sha256/0e/01/0e01b160103195a2df60922c040ce1af4a8a7e1de3cafa67f8594ad096840d49)
- August 31, 2006: Amended, Current. [certificate](https://openairdocs.org/files/sha256/61/80/6180511abf438e88ffba5f6594a036d0b548d06cdf885b026ff07611d7aee1a0)

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