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Navy NEC · IT & Cyber

728A Limited Communications Security (COMSEC) Maintenance Technician

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

A Limited Communications Security Maintenance Technician performs organizational-level maintenance on hardware-based encryption devices and associated common fill devices. The technician inspects and services equipment, replaces faulty assemblies or chassis-mounted components, and diagnoses faults using prescribed procedures, built-in tests, and electronic test equipment.

Core Skills

  • Common fill device inspection and servicing
  • Fault diagnosis using built-in and electronic test equipment
  • Faulty assembly and chassis-mounted component replacement

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Electrical and Electronics Repairers, Commercial and Industrial Equipment

Diagnosing encryption-device faults with electronic test equipment and replacing faulty assemblies transfers directly to commercial and industrial electronics repair.

How to prepare: Complete a hands-on industrial electronics troubleshooting course focused on equipment testing, component inspection, and repair verification.

What the civilian work involves
  • Test faulty equipment to diagnose malfunctions, using test equipment or software, and applying knowledge of the functional operation of electronic units and systems.
  • Inspect components of industrial equipment for accurate assembly and installation or for defects, such as loose connections or frayed wires.
  • Set up and test industrial equipment to ensure that it functions properly.
Civilian tools and software (examples)
  • Circuit evaluation software
  • Computerized maintenance management system CMMS

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC 728A

    [1] NEC entry "728A - Limited Communications Security (COMSEC) Maintenance Technician"; cached text line 17270; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Common fill device inspection and servicing, Fault diagnosis using built-in and electronic test equipment, Faulty assembly and chassis-mounted component replacement, Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

  2. O*NET: Electrical and Electronics Repairers, Commercial and Industrial Equipment

    [2] O*NET 30.3 occupational data

    Supports: Electrical and Electronics Repairers, Commercial and Industrial Equipment (O*NET 49-2094.00)

Defense contractor jobs for 728A

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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