Fixed-Wing Aircraft Airframe Mechanic, F-35B

You are the apprentice on the most expensive jet the Marine Corps has ever flown. Your job is to learn the F-35B without breaking it.

Perform scheduled and unscheduled maintenance on the F-35B airframe under direct supervision of a CDI. You're doing inspections, servicing, panel removal and reinstallation, and supporting composite and LO coating repairs — but you're not signing off on anything yet. You learn the NAMP inside out, memorize the F-35 maintenance manual structure, and prove you can be trusted around a $100M aircraft before anyone hands you more responsibility. Expect to spend significant time on corrosion prevention, fastener torque checks, and keeping the maintenance forms accurate.

• 01Aircraft forms/records (ALIS/ODIN data entry), panel removal and reinstallation, fastener torque procedures, FOD prevention discipline, basic composite inspection (scratch vs. damage), basic LO coating awareness, hydraulic servicing support

• —COMNAVAIRFORINST 4790.2 (NAMP), F-35 Aircraft Maintenance Manuals (AMM), F-35 Structural Repair Manual (SRM), MIM/MRC card execution, squadron SOP

• —Zero FOD incidents. Every form entry correct before you submit. Torque values verified against the specific manual — not from memory. No LO surface touched without supervision. Every discrepancy written up, none walked past.

• —Using legacy jet habits on the F-35 — the composite structure and LO coatings do not tolerate improvisation. Missing a fastener torque sequence. Treating a coating scratch as cosmetic without pulling the SRM. Entering ODIN data from memory instead of the actual work order.

An E-3 who has memorized the panel locations and access points for every daily inspection item, who writes up discrepancies clearly and completely, and who has never caused a FOD incident. They ask the right questions before they touch anything unfamiliar, and their forms are clean enough that a CDI signs them without hesitation.

You are working toward your CDI and starting to own specific maintenance tasks. The F-35B is no longer intimidating — now it is your jet.

Execute airframe maintenance tasks with increasing independence and pursue your CDI (Collateral Duty Inspector) qualification. You're performing composite repairs at your authorized level, supporting LO coating repair evolutions under supervision, working fuel cell maintenance, and diving into flight control rigging. You maintain your own qualification records in the APG (Authorized Proficiency Guide) and start developing the documentation habits that define a good F-35 mechanic. You also begin standing maintenance watches and supporting higher-tempo operations — surge periods, deployments, and WESTPAC rotations test whether your foundational skills actually hold under pressure.

• 01CDI qualification progression, composite damage assessment and repair execution, LO coating inspection techniques, fuel cell entry and repair procedures, flight control functional checks, APG maintenance, ODIN/ALIS discrepancy management, maintenance watch standing

• —F-35 SRM (Structural Repair Manual), NAMP CDI qualification requirements, T/M/S-specific APG, NATOPS, F-35 AMM Chapters 20/27/28/57, squadron CDI binder

• —CDI qual complete or on track per squadron timeline. Every composite repair documented with pre/post inspection photos and SRM reference. LO coating repairs require a Level I or II LO inspector to accept — your prep work must be flawless. Fuel cell work requires two-man integrity throughout.

• —Rushing CDI qualification to check a box without actually understanding the standards. Confusing LO touchup limits — what requires a touchup versus what requires a depot-level repair. Skipping the two-person verification on fuel cell entry. Letting APG entries fall behind and then trying to reconstruct them.

A Cpl who has their CDI, knows exactly which repairs they are authorized to sign off versus which ones require the QA rep or LO program manager, and who has never had a maintenance action kicked back for incomplete documentation. They are the junior Marine's first call when something looks wrong on the airframe.

You are a CDI and a technical authority. You are responsible for the work quality of junior Marines, and the F-35B's airworthiness runs through your signature.

Lead a maintenance team executing airframe work on the F-35B. You sign off maintenance as a CDI, manage the work center's daily schedule, troubleshoot complex airframe discrepancies, and are deeply involved in LO program execution — inspections, repairs, documentation, and coordinating with the squadron LO program manager. You mentor junior Marines through their APG qualifications, conduct on-the-job training, and start interfacing with QA on complex or recurring discrepancies. Deployments at this rank mean you are the NCO making calls at 0200 when the jet has a gripe and the flight schedule is six hours away.

• 01CDI signature authority, LO coating repair execution and documentation, composite structural repair (Classes I-III), team supervision and daily scheduling, ODIN/ALIS discrepancy trending, fuel system troubleshooting, egress system familiarization, technical publication interpretation, junior Marine APG management

• —COMNAVAIRFORINST 4790.2, F-35 SRM all applicable chapters, F-35 AMM, NAVAIR 01-1A-509 (corrosion), LO program directives, squadron quality assurance SOP, T/M/S NATOPS

• —Every CDI signature defensible — if QA pulls that document in six months, it stands up. LO repairs meet the signature requirements for the applicable repair class. No open discrepancies fall through scheduling cracks. Junior Marines under your supervision have current, accurate APG entries. Egress system work goes through the prescribed two-person verification — no exceptions.

• —Signing off work you didn't personally verify because you trust the junior Marine. Underestimating LO repair cure times and rushing the process — the coating fails and the jet's signature degrades. Failing to trend recurring discrepancies in ODIN, so the same squawk gets fixed four times instead of finding the root cause. Letting egress system complacency creep in.

A Sgt whose CDI stamps appear on zero rejected maintenance actions for the quarter, who can walk any inspector through every repair in the work center's log and explain the SRM reference, and who has junior Marines actively working toward their qualifications because she is actually teaching — not just supervising. The jet goes to flight in better shape than it came in.

You are the work center chief. The airframe shop's output, its people's quals, and the squadron's LO program health — those are yours.

Run the airframe work center as the de facto shop chief. You manage the full maintenance workload across multiple jets, coordinate with Production Control on flight schedule priorities, manage the LO program documentation and qualification records for the shop, and interface with outside agencies — depot representatives, F-35 Joint Program Office reps, QA, and sometimes the F-35 Sustainment office when complex repairs exceed organic capability. You are the primary technical authority for composite and structural repairs in the squadron. You also carry a training and readiness function: every Marine in your shop needs to be progressing, and you're managing their MOS training pipeline alongside the daily grind.

• 01Work center management and scheduling, LO program oversight and LCAT (Low Observable Condition Assessment Tool) familiarity, depot coordination for Class IV+ repairs, production control interface, T&R program management, CDI/CDQAR qualification management, budget/material coordination (IMRL), senior technician-level composite repair authority

• —COMNAVAIRFORINST 4790.2, F-35 SRM, F-35 JPO tech directives, T&R Manual (MOS 6258), squadron LCAT program SOP, MCO P1510 series (T&R), NAVAIR F-35 field team directives

• —Work center qual rate meets or exceeds the T&R manual minimums. LCAT assessments are current on all aircraft in the squadron. Depot escapes (repairs that should have been caught organic but weren't) are zero. Every structural repair has a complete package — pre-work photos, SRM reference, material traceability, post-work inspection results. The shop's ODIN data is clean enough to brief the CO.

• —Treating LO program management as paperwork rather than operational readiness — a jet with degraded LO signature is not 5th-gen capable. Letting the T&R program slip because the flight schedule pressure is relentless. Failing to escalate repairs that are at the edge of organic authority because you don't want to look like you can't handle it.

An SSgt whose work center has a 95%+ CDI fill rate, whose LCAT assessments are never late, and who has a standing relationship with the depot field team so that when a Class IV repair shows up at 1600 on a Friday, she already knows who to call and what documentation they need. The CO trusts her read on whether a jet is truly ready to fly.

You are the senior enlisted technical authority for F-35B airframe maintenance in the squadron. Maintenance quality is your reputation.

Serve as the Maintenance Chief's right hand on airframe matters, or as the Production Chief for a forward-deployed element. You are accountable for the aggregate readiness of the airframe program across the entire squadron — not just one work center. You interface with the Maintenance Officer, the Quality Assurance division, and external agencies at the MAG/Wing level. You conduct or supervise Aircraft Condition Inspections (ACIs), manage the squadron's repair authorization process for complex damage, and are deeply involved in the F-35 ALIS/ODIN data quality program — because at 5th-gen, data quality IS maintenance quality. You also mentor SSgts and shape the training culture of the entire department.

• 01Squadron-level LO program management, ACI (Aircraft Condition Inspection) execution, repair authorization escalation process, ODIN/ALIS data integrity oversight, MAG/Wing-level coordination, Maintenance Officer interface, Aircraft Discrepancy Book (ADB) trend analysis, senior enlisted leadership and mentorship, pre-deployment readiness assessment

• —COMNAVAIRFORINST 4790.2 (all volumes), F-35 SRM, F-35 Program Office airworthiness directives, MCO P4790.2 series, T&R Manual, MAG maintenance SOP, NAVAIR field activity directives

• —Squadron aircraft availability rate reflects airframe shop performance. ACI findings are fully documented and dispositioned with no open items past their due dates. LO program assessments are current and the CO can brief the Wing on LO status at any time. SSgts in the department are developing toward independent leadership. Zero ODIN data integrity findings on Wing inspections.

• —Getting deep in the weeds on individual repairs instead of managing at the right altitude — your job is to see the whole picture, not be the best wrench-turner in the shop. Allowing optimistic reporting on LO status because the schedule pressure is real — degraded LO on an F-35B is a capability gap that goes on the Wing brief. Letting ODIN data slip because it feels like admin work.

A GySgt who walks into the hangar and can tell you the status, the risk, and the path to resolution on every open airframe discrepancy in the squadron without pulling up a computer — because she has built a work center culture that communicates. The Maintenance Officer trusts her numbers because her numbers have never been wrong.

You are the institutional knowledge of F-35B airframe maintenance. You have watched this airframe go from initial operating capability to the backbone of Marine aviation. Your job now is to make sure the Corps doesn't lose what was hard-won.

At MSgt/MGySgt, you operate at the MAG, Wing, or training command level — writing policy, shaping the T&R program, interfacing with NAVAIR and the F-35 Joint Program Office on sustainment and technical issues, and serving as the senior technical authority for structural airworthiness decisions that affect the entire fleet. At 1stSgt/SgtMaj, the focus shifts to people: welfare, discipline, readiness, and ensuring the human infrastructure of the maintenance department is as sound as the technical one. In either role, you are shaping the next generation of GySgts who will carry this program. You also carry institutional weight in the ongoing F-35 sustainment conversation — the program is still maturing, and senior 6258s have real influence on how the maintenance doctrine evolves.

• 01MAG/Wing-level LO program oversight and policy, F-35 JPO and NAVAIR sustainment interface, T&R program authorship and review, ACI standardization across multiple squadrons, structural airworthiness risk communication to senior leadership, senior enlisted advisor functions, instructor and schoolhouse oversight (VMFAT-501 pipeline), depot-level coordination and organic authority boundary management

• —COMNAVAIRFORINST 4790.2 (all volumes), F-35 Joint Program Office technical directives, NAVAIR 4.1 series, MCO P1510 series, Aviation Maintenance Officer/Chief course materials, Wing maintenance policy letters, DoD F-35 Sustainment Plan

• —The T&R program produces competent CDIs. The LO program across the MAG has no chronic compliance gaps. Structural airworthiness risks are communicated accurately and on time — no optimistic briefings to leadership that later come apart. The pipeline at VMFAT-501 produces Marines who arrive at the fleet ready to work. The institutional memory of how to maintain this jet survives PCS cycles because you wrote it down.

• —Treating the F-35's immaturity as an excuse — the program has been fielded long enough that structural standards exist and must be enforced. Allowing the LO program to become a compliance theater exercise at the Wing level instead of a genuine capability assessment. Failing to advocate up the chain when the flight schedule is generating deferred maintenance that will cost the fleet later.

An MGySgt who has personally shaped the T&R manual language that every 6258 in the Corps now trains to, who can walk into any F-35B squadron in the MAG and tell you within 20 minutes whether the airframe program is healthy or whether it's running on optimism, and whose name is known at NAVAIR because she has been in the room when the sustainment decisions that mattered were made. The jet works because people like her made sure it did.