# STC SR01738SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Mechanical Specialties Inc, United States
- Description: Installation of a Mechanical Specialties, Inc. model 6111, 11,000 pound capacity cargo hook
- Applied: October 14, 2006
- Status date: February 22, 2007
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2EA](https://openairdocs.org/tcds/H2EA)
- Certificate PDF: https://openairdocs.org/files/sha256/75/08/7508c6ffc4b3e18f6657e7c5fff7823be062c9f6fd890e292a9b8122ede69eb9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66D27D430E357D9C86257715004D583A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR01738SE

## ADs that name it (0)

None.

## Approved models (1)

- Sikorsky Aircraft Corporation S-61A ([TCDS H2EA](https://openairdocs.org/tcds/H2EA))

## 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.

Number SR01738SE

This certificate, issued to Mechanical Specialties, LLC.

1000 85 th Ave SE Olympia, WA 98501

Part 21.25 of the Federal Aviation Regulations.

Original Product⎯Type Certificate Number: H2EA Make: Sikorsky Aircraft Model: S-61A

Description of the Type Design Change: Installation of a Mechanical Specialties, Inc. model 6111, 11,000 pound capacity cargo hook as a direct replacement for Breeze Eastern models SP-7070-2 or SP-7102-1 cargo hooks, and to be used with Carson Services, Inc. 11,000 pound capacity cargo sling (STC SH639NE) or Helipro Corporation International’s 11,000 pound capacity cargo sling (STC SR00427SE).

Limitations and Conditions: Approval of this change in type design applies only to the rotorcraft model listed above. This approval should not be extended to other rotorcraft of this model on which other previously approved modification are incorporated unless it is determined that the relationship between this change and any 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 record of the modified rotorcraft.

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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked, or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: October 17, 2006 Date reissued:

Date of issuance: February 22, 2007 Date amended:

Original signed by James Rehrl (Signature)

___ Acting Manager, Seattle Aircraft Certification Office___ (Title) FAA FORM 8110-2(10-68)

## Every issue (1)

- February 22, 2007: Issued, Current. [certificate](https://openairdocs.org/files/sha256/75/08/7508c6ffc4b3e18f6657e7c5fff7823be062c9f6fd890e292a9b8122ede69eb9)

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