The Navy Enlisted Classification (NEC) system supplements the enlisted rating structure in identifying personnel on active or inactive duty and billets in manpower authorizations. NEC codes identify a non-rating wide skill, knowledge, aptitude, or qualification that must be documented to identify both people and billets for management purposes.
For example, if a Navy police officer ( MA -- Master at Arms ) receives specialized training as a K-9 Dog Handler, he/she would be awarded NEC MA-2005. From that point on, the sailor could be assigned to Navy law enforcement duties involving military working dogs.
Below are the NECs for the AVIATION MACHINIST'S MATE (AD) community area:
AD-6403 Oil Analysis Operator/Evaluator (APPLIES TO: AD, MM, GSM, EN)
AD-6410 F-110 Turbofan Jet Engine First Degree Repair/IMA Technician (APPLIES TO: AD)
AD-6415 TF-30 Turbofan Jet Engine First Degree Repair/IMA Mechanic (APPLIES TO: AD)
AD-6416 J-52 Turbojet Engine First Degree/IMA Mechanic (APPLIES TO: AD)
AD-6417 T-400 Turboshaft Jet Engine First Degree Repair/IMA Mechanic (APPLIES TO: AD)
AD-6418 T-56 Turboprop Engine and 54H60 Series Propeller First Degree/IMA Mechanic (APPLIES TO: AD)
AD-6419 T-58 Turboshaft Jet Engine First Degree/IMA (APPLIES TO: AD)
AD-6420 F-404 Turbofan Jet Engine First Degree/IMA Mechanic (APPLIES TO: AD)
AD-6421 TF-34 Turbofan Jet Engine First Degree/IMA Mechanic (APPLIES TO: AD)
AD 6422 Test Cell Operator/Maintainer (APPLIES TO: AD)
AD-6423 T-56-425/427 Turboprop Engine and Propeller IMA Mechanic (APPLIES TO: AD)
AD-6425 F414-GE-400 Turbofan Jet Engine Third Degree/IMA Mechanic (APPLIES TO: AD)
AD-6426 T-700 Turboshaft Jet Engine First Degree/IMA Mechanic (APPLIES TO: AD)
AD-6428 Helicopter Rotors/Related Components IMA Mechanic (APPLIES TO: AD)

