Navy Officer designator · Aviation
633X Aviation Maintenance Specialty LDO
Current service use not established
This code is listed in the directory. Inclusion alone does not confirm current service use.
A Navy officer classification, not an enlisted rating.
Overview
Aviation Maintenance Limited Duty Officers plan and supervise maintenance programs at the organizational, intermediate, and depot levels. They develop quality assurance standards, review aircraft maintenance records and reports, evaluate maintenance systems and methods, and administer aeronautical material procurement programs.
Notes & Sources
- NOOCS Part A (Edition 96, Jul 2026) prints officer code 633X as “A Limited Duty Officer (Aviation · Maintenance)…”, paired with its Limited Duty Officer billet row (billet 6330 requiring the specialty); the row states who holds the code and which specialty the billet requires, not what duties every holder performs. See the cited block for the exact pairing text.
- Because the Navy carries no duty, training, or clearance prose at designator level, occupation-specific recommendations are not published here; a 633X officer’s duties depend on the assigned billet.
Evidence for this guidance (1 document)
- NAVPERS 15839I Vol I Part A · Billet and Officer Designator Codes (NOOCS Edition 96, Jul 2026)
[1] Part A officer designator table, block 633X, cached text line 840
Supports: Specialty definition
Source review recorded September 24, 2026.
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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