What it approves
Installation of the transmission input modification to the main gear box
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.
NumberSR01534SE
This certificate, issued to Croman Corporation 801 Avenue C White City, OR 97503
Part 29 of the Federal Aviation Regulations.
Original ProductType Certificate Number: 1H15 Make: Sikorsky Model: S-61N; S-61NM; S-61L
Description of the Type Design Change: Installation of the transmission input modification to the main gear box of the Sikorsky S-61N helicopter in accordance with McClenahan Engineering Document DM0450-4, Revision A, dated May 21, 2013, or later Federal Aviation Administration (FAA) approved revision.
Limitations and Conditions: This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate must be maintained as part of the permanent records for the modified rotorcraft. These are direct replacement parts and the FAA has determined that no Instructions for Continued Airworthiness are required.
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.
Date of application: September 13, 2004 Date reissued:
Date of issuance: April 21, 2005 Date amended: June 3, 2013
(Signature)
Acting Manager, Seattle Aircraft Certification Office (Title)
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
Approved models · 3
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| June 3, 2013 | Amended, current | Certificate |
| April 21, 2005 | Issued, earlier issue | Certificate |