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Navy NEC · Engineering

T39A In-Tube Conversion 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 In-Tube Conversion Technician converts Trident II tactical Fleet Ballistic Missiles to a test configuration. The technician performs these conversions in support of the Director, Strategic Systems Program's Flight Test Program.

Core Skills

  • Trident II missile conversion for flight testing

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.

Aerospace Engineering and Operations Technologists and Technicians

Converting Trident II missiles from tactical to test configuration provides relevant experience preparing aerospace systems for flight-test programs.

How to prepare: Complete a hands-on course in test instrumentation and data acquisition to extend configuration-conversion experience into test setup and measurement.

What the civilian work involves
  • Test aircraft systems under simulated operational conditions, performing systems readiness tests and pre- and post-operational checkouts, to establish design or fabrication parameters.
  • Identify required data, data acquisition plans, and test parameters, setting up equipment to conform to these specifications.

Notes & Sources

Evidence for this guidance (2 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC T39A

    [1] NEC entry "T39A - In-Tube Conversion Technician"; cached text line 10972; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Trident II missile conversion for flight testing, Aerospace Engineering and Operations Technologists and Technicians (O*NET 17-3021.00)

  2. O*NET: Aerospace Engineering and Operations Technologists and Technicians

    [2] O*NET 30.3 occupational data

    Supports: Aerospace Engineering and Operations Technologists and Technicians (O*NET 17-3021.00)

Defense contractor jobs for T39A

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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