What it approves
Installation of a de-icing system externally on the Dowty Rotol propeller spinner.
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may 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.
A1PC
Mitsubishi Heavy Industries
YS-11, YS-11A-200, -300, -500, -600 Description of Type Design Change : Installation of a de-icing system externally on the Dowty Rotol Part Number (C) 4CM/71 Propeller Spinner in accord ance with Montgomery Systems Tech Drawing No.
465144, Revision N/C, dated July 9, 1984, or later FAA approved revision, as an alternate to Dowty Rotol internal heater elements.
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 : May 24, 1985
Date of issuance : November 4, 1985
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.
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 5
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| December 20, 2011 | Reissued, current | Certificate |
| August 31, 2006 | Amended, earlier issue | Certificate |