# STC SH5471NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Rolls-Royce Engine Services-Oakland Inc., United States - Description: Installation of Heli-Dyne E type nose and Model 369E horzontal stabilizer (P/N 421-087-505). - Applied: September 3, 1991 - Status date: January 6, 2011 - Product: Aircraft, Rotorcraft - Certification basis: Part 21 - Data sheets: [TCDS H3WE](https://openairdocs.org/tcds/H3WE) - Certificate PDF: https://openairdocs.org/files/sha256/de/aa/deaa5fbb31b10bc66b0dd74a190e49c3e243d20f4f421d9c354fd508be55fd62 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C89AFE386E1B85888625781500697395.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SH5471NM ## ADs that name it (0) None. ## Approved models (1) - MD Helicopter Inc. 369D ([TCDS H3WE](https://openairdocs.org/tcds/H3WE)) ## 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. United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate This certificate has been reissued to replace the original certificate reported as lost. This Certificate issued to ROLLS-ROYCE ENGINE SERVICES-OAKLAND INC. 7200 Earhart Road Oakland, California 94621-4504 Part 6 of the Civil Air Regulations.. H3WE MD Helicopter Inc. (MDHI) 369D Description of Type Design Change: 1) Installation of Heli-Dyne “E” type nose and Model 369E horizontal stabilizer (P/N 421-087-505) in accordance with FAA Approved Heli-Dyne, Inc. Drawing No. 369HD2421-3, Revision F, with E. O. No F1, dated July 16, 1991, or later FAA approved revisions. 2) Installation of Heli-Dyne “E” type nose in acco rdance with FAA Approved Heli-Dyne, Inc. Drawing No. 369HD2421-1, Revision F, with E. O. No. F1, F2, dated June 29, 1992, or later FAA approved revisions. Limitations and Conditions: The service life of the model 369E horizontal stabilizer (P/N 421- 087-505) has been established at 5136 hours, with periodic inspections at 2500 hours time in service and every 100 hours thereafter (as specifi ed in Report 369ED-103, Revisions N/C, dated July 12, 1991, or later FAA approved revisions), un til the service life is reached. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. (See continuation on Page 3) Date of application : December 12, 1990 Date of issuance : September 3, 1991 Date reissued : April 30, 1995, January 6, 2011 Date amended : July 22, 1992 ( Signature) Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title) United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SH5471NM The service life of the Model 369D horizontal stabilizer (P/N 369D23601, including all dash numbers), has been established at 5136 hours, with periodic inspections at 4000 hours time in service and every 100 hours thereafter (as specified in Report 369ED-105, dated May 22, 1992, or later FAA approved revisions), until the service life is reached. The service life of the model 369D vertical stabilizer (P/N 369D23600, including all dash numbers) has been established at 7621 hours, with periodic inspections at 4000 hours time in service and every 100 hours thereafter (as specified in Report 369ED-105, dated May 22, 1992, or later FAA approved revisions), until the service life is reached. The modifications require the use of the Rotorcraft Flight Manual Supplement (Document 369ED-104, Revision 1) dated July 20, 1992, or later FAA approved revisions. This approval should not be extended to other specific rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that rotorcraft. -END- United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SH5471NM 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.** United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SH5471NM ## Every issue (1) - January 6, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/de/aa/deaa5fbb31b10bc66b0dd74a190e49c3e243d20f4f421d9c354fd508be55fd62) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.