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Aviation Machinist's Mate is the only one of the four that is still in use today, making it the oldest U.S. Naval Aviation Rating still in service. [ 2 ] In April, 1948, the rating's abbreviation was changed from AMM to AD, but the insignia has not changed since 1921.
E-1 to E-3 are divided into five general occupational fields (airman, constructionman, fireman, hospitalman, or seaman) based on their rate. For example, an AD (Aviation Machinist's Mate) E-3 would be referred to as an Airman, an E-2 as an Airman Apprentice, and E-1 as an Airman Recruit.
Machinist's Mate (or MM) is a rating in the United States Navy's engineering community. It is non-capitalised as machinist's mate when discussing the generic rating rather than as a proper noun when discussing a specific enlisted seaman (Machinist's Mate Jane Doe, MM John Doe) carrying that rating.
Often Navy enlisted members are addressed by a combination of rating and rate; in this example, this Machinist's Mate Petty Officer First Class may be addressed as Machinist's Mate 1st Class (MM1). However, the NEC designator is a four-digit code that identifies skills and abilities beyond the standard (or outward) rating designator.
The AMH was for hydraulic systems (landing gear, brakes, flight controls and all related). The AMS was structural/sheet metal. Today's AM Rating began from the aviation metalsmith used between 1921 and 1948. In 2001, the AMS and AMH Ratings were merged to form the AM Rating, the AME Rating remains a separate and distinct rating.
A chief's full title is a combination of the two. Thus, a senior chief petty officer with the rating of machinist's mate would properly be called a senior chief machinist's mate, the abbreviation of which is MMCS. Each rating has an official abbreviation, such as MM for machinist's mate, QM for quartermaster, and YN for yeoman.
The rating was officially established January 1, 2010 when 1,053 active duty and 988 reserve members transitioned from existing ratings and became maritime enforcement specialists. The new rating is designed to enhance the Coast Guard's capabilities as America's maritime guardians and support the Coast Guard's modernization goal of developing a ...
Carrier Aircraft Service Units (CASU) were United States Navy units formed during World War II for the Pacific War to support naval aircraft operations. From 1942 to 1946, 69 Carrier Aircraft Service Units were formed to repair and maintain aircraft. The first unit was deployed to Naval Station Pearl Harbor.