27X: PATRIOT System Repairer

Major Duties: The PATRIOT system repairer performs or supervises direct and general support (DS/GS) level maintenance on the PATRIOT missile system, associated equipment and trainers. Duties for MOS 27X at each level of skill are:

• Skill Levels
  • Skill Level 2 MOSC 27X2O. Performs DS/GS level maintenance on the PATRIOT Information and Coordination Central (ICC), Engagement Control Station (ECS), Radar Set (RS), Antenna Mast Group (AMG), Launching Station (LS) and Communications Relay Group (CRG). Performs tests and adjusts components to specific tolerances and determines shortcomings and malfunctions in electronic assemblies, subassemblies, modules and circuit elements with common and system peculiar test equipment. Isolates malfunctions using automatic and semi-automatic program maintenance diagnostic software, unit self test and built in test equipment (BITE). Develops specialized computer software tests to evaluate suspected faults. Isolates system interface malfunctions. Determines serviceability and disposition of defective assemblies, subassemblies, modules and circuit elements. Repairs unserviceable items by removing and replacing defective components. Operates and performs unit level maintenance on standard and system peculiar test equipment. Performs quality control measures and serves on maintenance and inspection teams. Completes maintenance and supply forms. Provides technical assistance to supported units.
    
    
  • Skill Level 3 MOSC 27X3O. Performs duties shown in preceding level of skill and provides technical guidance to lower grade personnel in the performance of their duties. Performs initial, in process and final type inspections of designated system items and their assemblies, subassemblies, modules and circuit elements. Performs as maintenance technical inspector.
    
    
  • Skill Level 4 MOSC 27X4O. Performs and supervises duties performed at preceding levels of skill. Implements quality control measures, determines faulty work practices and demonstrates proper maintenance and troubleshooting techniques. Establishes workloads and repair priorities. Establishes and maintains maintenance records. Supervises maintenance and inspection teams. Instructs lower ranking personnel in the technical aspects of the PATRIOT system. Prepares maintenance and supply forms.
    
    
  • Skill Level 5 MOSC 27X5O. Performs and supervises duties performed at preceding levels of skill. Recommends procedures for receipt, storage, inspection, testing and repair of items. Organizes maintenance teams. Prepares maintenance reports.

Physical demands rating and qualifications for initial award of MOS. The PATRIOT system repairer must possess the following qualifications:

(1) Physical Demands Rating: N/A

(2) Physical Profile: 222221

(3) Normal color vision.

(4) Minimum score of 110 in aptitude area EL.

(5) A security clearance of SECRET.

(6) A U.S. citizen.

(7) Qualified in MOS 24H, 24K, 27G, 27H, 27K, 35C, 35E, 35H, 35J, or 35Y in grades SGT or SSG.

(8) Formal training (completion of MOS 27X Course conducted under the auspices of the U.S. Army Ordnance Missile and Munitions School) mandatory; or waiver may be granted by the Commandant USAOMMCS, Redstone Arsenal, AL 35897-6000.

The major duties, physical demands, physical profile, and skill levels were obtained from Army Pamphlet 611-21.

MOS List for Ordnance Corps