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6672E1-E3
Aviation Supply Specialist
E-1 to E-3 (Junior Enlisted) · Marines
HEADS UP
Aviation supply at the junior level is not a cushy office job — you are the person physically locating, pulling, and receipting aircraft parts under pressure while a squadron's maintainers are breathing down your neck about a jet that's down for parts. The NMCS clock is always running, and if a part doesn't move fast enough, your name is already on someone's whiteboard.
The Honest MOS Read
Your first two years will be spent learning MILSTRIP inside out — requisition codes, priority designators, routing identifiers, and what happens when you fat-finger a TAMCN or supply status code. You'll work in a Supply Management Unit or an intermediate-level MALS, processing transactions on aging Navy Enterprise Resource Planning or legacy systems that will make you question everything. The mission tempo is real: a grounded aircraft costs hundreds of thousands of dollars per day, and the supply chain is the reason it stays grounded or gets back in the air.
Career Arc
Advancement from E1-E3 is largely time-in-service and time-in-grade, but getting your N-PQS (Personnel Qualification Standards) check-offs signed off early and demonstrating competency on MILSTRIP requisitioning marks you for the good billets. Corporals Course eligibility is the next gate; start building your pro/con marks and MCI completion record now.
Common Screwups
Wrong priority designator on a requisition is the classic junior Marine error — bumping a routine request to NMCS priority when the aircraft is AWP not NMCS draws immediate attention from the Supply Officer and wastes a limited urgency slot. Failure to follow up on Due-In-From-Maintenance (DIFM) assets is another — those parts come back with an accountability chain attached, and a lost DIFM is a lost battle against the Property Officer. Not annotating the AVCAL status changes in a timely manner causes cascading errors downstream.
A Day in the Life
Morning starts with reviewing the overnight message traffic for supply statuses — any NMCS aircraft that got a part shipped overnight needs its AWP status updated before the 0800 maintenance brief. Mid-morning is processing receipts from the previous day's deliveries, matching packing slips to open requisitions, posting to the system, and routing material to the maintenance shop. Afternoon is follow-up calls and message traffic to the MALS IMA for outstanding backorders, adjusting priorities on anything the Aircraft Maintenance Officer flagged. End of day is reconciling your requisition log and ensuring no NMCS requisition is sitting without a 72-hour follow-up.
Weekly Cadence
Monday: review AWP report and reconcile against open requisitions with the maintenance chief. Tuesday-Wednesday: process all inbound material, post receipts, verify DIFM turn-in accountability. Thursday: physical spot-check of controlled items and high-value parts in the supply cage. Friday: requisition register audit — every open document accounted for, every status code current, brief the supply SNCO on anything that needs escalation to the MALS. Monthly: AVCAL review to verify on-hand quantities match authorized allowances.
Key Skills — How to Drill Each
MILSTRIP requisitioning is the bedrock — you must know Document Identifier Codes, Media and Status Codes, Unit of Issue, and how to read a supply status card cold. NSN/NIIN lookups via FEDLOG are how you find the right part when someone hands you a piece of metal with a part number scratched on it. NMCS and AWP tracking requires you to maintain visibility on every outstanding requisition tied to an aircraft that's grounded; you are the first line of accountability. AVCAL management means understanding what allowances are authorized for the squadron versus what has to be requisitioned from the MALS. SHOREREC system navigation — processing receipts, posting transactions, reconciling inventory — is the daily operational system you cannot afford to fumble.
Manuals & References — What Chapters Matter
MCO P4400.150 (Marine Corps Uniform Material Movement and Issue Priority System) governs every requisition priority you submit — knowing it prevents improper NMCS upgrades that waste urgency slots. NAVSUP P-485 (Naval Supply Procedures) is the Bible for how receipts, surveys, and material issues are processed; you will reference it constantly. COMNAVAIRFORINST 4790.2 (Naval Aviation Maintenance Program) is the maintenance instruction, but supply Marines must understand it because every CASREPmaintenance trigger has a supply component. MCO 4400.16 covers inventory management and physical inventory procedures — you'll face a wall-to-wall inventory at some point and this is how you pass it.
Standards — How to Hit Each
At E1-E3, the standard is clean documentation and zero unresolved discrepancies in your piece of the requisition log. A 72-hour follow-up on all NMCS requisitions without being told. Zero lost DIFM assets. Knowing your assigned TAMCN and stock numbers without looking them up. Every receipt processed the day material is received — not tomorrow, not end of week.
Technical Mistakes — Concrete Consequences
Confusing the Advice Code on a MILSTRIP requisition — particularly misusing code 2B (procurement restricted) when the part is actually in the system — routes the requisition into a dead end that can take days to recover. Entering the wrong Unit of Issue code (each vs. lot vs. set) when receipt-processing over-receives or under-receives material against the document. Failure to apply correct Julian date conversion when posting transactions leads to sequencing errors the Supply Officer will find during audit. Misidentifying an interchangeable NSN as the primary NSN causes FEDLOG cross-reference failures and a part that should be in stock gets requisitioned unnecessarily.
Career Decisions at This Rank
The first big fork is whether to apply early for a MALS billet after your initial squadron tour, which puts you in the intermediate supply environment and broadens your technical depth dramatically — MALS billets are harder but the Marines who do them promote faster. The second decision is whether to get your NCPACE or Community College of the Air Force credits moving — supply management has a direct civilian career translation and the Marines who build those credentials while in service have options the others don't.
How the Seat Varies by Unit Type
At a VMFA (fighter-attack) squadron, the parts are high-cost, high-complexity, and the NMCS pressure is intense because a single jet grounded costs more per day than most junior Marines earn in a year — the pace is relentless. At an HMH (heavy helicopter) squadron, the rotary-wing parts ecosystem is different and the AVCAL structure heavier, with more organic supply depth but also more DIFM accountability complexity. At a MALS billet, you're the intermediate supply link for multiple squadrons, so your mistakes multiply in scope. At a MAG (Marine Aircraft Group) headquarters supply section, the work is more administrative and less transactional.
What Good Looks Like at This Rank
Outstanding junior Marines in 6672 own their portion of the requisition register without prompting — they know exactly which of their outstanding requests are NMCS-coded and they proactively call the MALS Supply Management Division for status before the daily aircraft status brief. They learn FEDLOG cross-referencing faster than their peers and start helping others find alternate NSNs. They read the daily AWP report and flag discrepancies before the supply chief does.
Preview — The Next Rank
At Corporal you are expected to own an entire functional area — either managing all NMCS requisitions for an aircraft type or running the DIFM cage independently. You need to be correcting junior Marines' MILSTRIP errors, not making them yourself. The expectation shifts from 'follow the process' to 'own the process and brief the officer on exceptions.'
FAQ
6672 E1-E3 — Frequently Asked Questions
Q01What does a E1-E3 6672 (Aviation Supply Specialist) actually do?
You spend your days at the supply counter processing MILSTRIP requisitions, running FEDLOG lookups for NSNs and part numbers, and updating due-in records for parts on open order.
Q02What's the most important thing to know as a E1-E3 6672?
Aviation supply at the junior level is not a cushy office job — you are the person physically locating, pulling, and receipting aircraft parts under pressure while a squadron's maintainers are breathing down your neck about a jet that's down for parts.
Q03What mistakes get E1-E3 6672 soldiers fired or relieved?
Wrong priority designator on a requisition is the classic junior Marine error — bumping a routine request to NMCS priority when the aircraft is AWP not NMCS draws immediate attention from the Supply Officer and wastes a limited urgency slot. Failure to follow up on Due-In-From-Maintenance (DIFM) assets is another — those parts come back with an accountability chain attached, and a lost DIFM is a lost battle against the Property Officer.…
Q04What's next after E1-E3 for a 6672 (Aviation Supply Specialist) in the Marines?
At Corporal you are expected to own an entire functional area — either managing all NMCS requisitions for an aircraft type or running the DIFM cage independently.
Q05What manuals and regulations does a E1-E3 6672 need to know cold?
MCO P4400.150, NAVSUP P-485, COMNAVAIRFORINST 4790.2, unit SOP for requisition processing
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Published by the Honest MOS Editorial DeskVerified against DoD/.gov sourcesUpdated May 2026Editorial standards