MIL-HDBK-274 Electrical Grounding For Aircraft SafetyThis handbook has been prepared to provide U.S. Navy and Marine Corps aircraft maintenance and operations personnel with the background and technical details of the different types of aircraft grounds and how they are applied. In addition, this handbook provides background information for aircraft grounding, static electricity theory and how it affects aircraft, and techniques used for measurement of grounding points. This handbook is intended for use by all U.S. Navy and Marine Corps aircraft maintenance and operations personnel for the purposes of ensuring that aircraft are properly and safely grounded. This handbook is for guidance only and cannot be cited as a requirement.

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MIL-HDBK-274A

FOREWORD

1. This handbook is approved for use by the Department of the Navy and is available for use by all Departments and Agencies of the Department of Defense.

2. This handbook is for guidance only. This handbook cannot be cited as a requirement. If it is, the contractor does not have to comply.

3. This handbook has been prepared to provide U.S. Navy and Marine Corps personnel with the background and technical details of the different types of aircraft grounds and how they are applied. Information related to construction of facility radio frequency (RF) grounds, lightning grounds, power safety grounds, and sensitive equipment grounds are addressed in the Naval Facilities Engineering Command (NAVFAC) Unified Facilities Criteria (UFC), "Static Electricity and Lightning Protection Systems."

4. Comments, suggestions, or questions on this document should be addressed to : Naval Air Systems Command (Commander, Naval Air Warfare Center Aircraft Division, Code 4L8000B120-3, Highway 547, Lakehurst, NJ 08733-5100) or emailed to Michael.Sikora@navy.. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at: https://assist.daps.dla.mil/online/start/.