LDO Designators

 
Limited Duty Officer Designators

 

The Limited Duty Officer (LDO) Community is comprised of 8 designators.
 
Officer designator codes are four-digit numbers used to group officers by categories for personnel accounting and administrative purposes and to identify the status of officers.  These codes identify, through the first three digits, the categories in which officers are appointed and/or designated and through the fourth digit, the status of the officers within the various categories.
   623X. . . .Engineering/Repair-Submarine
   626X. . . .Ordnance-Submarine
   628X. . . .Electronics-Submarine
   629X. . . .Communications-Submarine
   633X. . . .Aircraft-Maintenance
   641X. . . .Administration
   649X. . . .Security
   653X. . . .Civil Engineer Corps
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