What it approves
Installation of Pratt & Whitney PT6T-3DF Twin-Pack in place of PT6T-3B, -3BE, -3BF, -3BG Twin Pack
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 DIAMOND UPGRADES, LLC 920 KING STREET 2ND FLOOR WILMINGTON, DE 19801 Part 29* of the Federal Aviation Regulations. *Certification basis is set forth in Type Certificate Data Sheet H4SW Original Product Type Certificate Number :
H4SW Bell 412 Description of Type Design Change : Installation of Pratt & Whitney PT6T-3DF Twin-Pack in place of PT6T-3B, -3BE, -3BF, -3BG Twin P ack, in accordance with Airlane U pgrades’ Installation Instruction AU-412010420, Revision N/C, dated April 20, 2001, or later FAA approved revision. FAA Approved Rotorcraft Flight Manual Supplement No. AU-412010423, dated June 28, 2001, or later FAA approved revision is required with this installation.
Limitations and Conditions : The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this in stallation and any previous ly approved configuration will not introduce any adverse effect upon the airwor thiness of the aircraft. The approval of this modification applies to the above-noted rotorcraft model series only and the incorporation of Bell Helicopter Technical Bulletin 412-84-44, 412-90- 84, 412-93-118, 412-99-152, and 412-99-165. (See page 3). A copy of this STC must be included in th e permanent records of the modified aircraft. If the holder agrees to permit another person to use this certif icate to alter the product, the holder shall give the other person written evidence of that permission.
Date of application : April 22, 2001
Date of issuance : June 28, 2001
Date reissued : October 11, 2012
Date amended : January 22, 2003, March 12, 2004
( Signature) Manager, Propulsion Branch 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.
Number SR01180LA
Limitations and Conditions (Continued): The limitation for the installed PT6T-3DF engine are: 1) the same performance and operating limits as the previously installed PT6T-3B, -3BE, -3BF, -3BG; and 2) the increased OEI performance of the PT6T-3DF with the appropriate engine instruments and marking installed.
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ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 1
| Make | Model | Data sheet |
|---|---|---|
| Bell Helicopter Textron | 412 | H4SW |
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| October 11, 2012 | Reissued, current | Certificate |
| March 12, 2004 | Amended, earlier issue | Certificate |