Documents

Note: Below you will find PDF copies of our informational brochures, maintenance manuals, STC's and more. Every effort is made to ensure the documents here are the most up-to-date versions available, but please feel free to contact us to verify if you have any questions.

Clicking any button will open the document in a new tab on your browser, if you wish to save a local copy just right-click on the button and choose the Save link as... option.

Supplemental Type Certificates

Bell STCs

Sikorsky STCs

Note: Click on any of the listed titles to open them in a new browser tab, or right-click and choose the Save link as… option to save a copy to your own device.

McDonnell Douglas STCs

Global Spar STCs

Customer Service

Mechanical Specialties would love to be your #1 source for cargo hooks, custom fast-rope gantries, hook overhauls and any specialty engineering issues you may need to overcome. Our in-house design and manufacturing capabilities are robust and we enjoy challenges.

New customers, please download and complete the New Customer Set Up Form and email to ar@nwhelicopters.com so we can set up your account.

If you have sales, service, or engineering inquiries, use our online contact form.