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Navy NEC · Communications

I21A Aircraft Communications Security Devices Equipment IMA 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

An Aircraft Communications Security Devices Equipment IMA Technician performs intermediate level maintenance on aircraft communications security equipment. The technician works specifically with security devices used for aircraft communications.

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.

Avionics Technicians

Intermediate-level maintenance of aircraft communications security devices transfers directly to the avionics equipment maintenance portion of this occupation.

How to prepare: Complete a hands-on civilian avionics component-testing course to practice troubleshooting equipment beyond communications security devices.

What the civilian work involves
  • Test and troubleshoot instruments, components, and assemblies, using circuit testers, oscilloscopes, or voltmeters.
  • Adjust, repair, or replace malfunctioning components or assemblies, using hand tools or soldering irons.

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC I21A

    [1] NEC entry "I21A - Aircraft Communications Security Devices Equipment IMA Technician"; cached text line 6740; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Avionics Technicians (O*NET 49-2091.00)

  2. O*NET: Avionics Technicians

    [2] O*NET 30.3 occupational data

    Supports: Avionics Technicians (O*NET 49-2091.00)

Defense contractor jobs for I21A

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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