Going digital allows Lycoming to provide improved documentation products, enable more comprehensive revisions and speed delivery to subscribers.

Now available on the Lycoming.com website free-of-charge are recent and frequently requested Service Letters, Service Instructions and Service Bulletins. Installation/Operator Manuals, Maintenance Manuals, Parts Catalogs and other Reference Documents are also now available on the website.


These service documents can be found in the Technical Publications section of Lycoming.com via the “Technical Publications” link in the top right-hand corner of every page on the website. Visitors can also search for technical publications through the general website search function.

Air Power is the source for replacement 320s cylinders. Contact 866-287-8886 to speak with an expert today. Dec 24, 2004 Cessna and Lycoming were looking at massive production volumes in those days and chose to bring out an engine that could be manufactured in large numbers on a new computer- controlled machining center. The 160 hp O-320-H2AD was introduced in 1976 and was in production until 1980. The concept was great, but suffered some challenges.

A comprehensive library of Lycoming publications, along with Overhaul manuals, are available for a fee through third party providers ATP or TData. Contact information for these resources is provided below.

To help customers stay up-to date on Lycoming’s recent publications, the company developed an email notification tool that allows individuals to opt-in to receive a notice when a new publication is added to Lycoming.com. Click here to sign up.

Please refer to the latest edition of Service Letter 114 for additional information. To ensure you have the latest revisions and technical documents, please check Lycoming.com on a regular basis. If you have further questions or cannot find an older service publications not yet available in digital format, please contact the Lycoming Technical Publications Department at [email protected]

ATP Contact Information:

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Website: https://www.atp.com/services/maintenance-libraries.php

Lycoming 0320 H2ad Operators Manual

Mailing Address: 101 South Hill Drive, Brisbane, CA 94005-1251

Telephone: U.S. & Canada: 800-227-4610 ; Worldwide: (+1) 415-330-9500

Fax: 415-468-1596

TData Contact Information:

Website: https://www.tdata.com/

Mailing Address: 60 Grace Drive, Powell, OH 43065

Lycoming 0320 H2ad Operator's Manual Instructions

Telephone: U.S.: 1-800-783-2827 ; International 1-614-885-116Fax: 619-885-4342