01 / Occupational profile
Your 67N occupational profile
Turbine, rotor, and weapons noise
Common occupational factor
Running the T53 turbine for checks, working on active flight lines, flying with open cargo doors, and firing door-mounted machine guns are high-noise conditions, often in eras with limited hearing protection.
Vietnam-era service and herbicide exposure
Location-dependent
Soldiers who served in the Republic of Vietnam during the period VA recognizes may qualify for the herbicide presumption under 38 CFR § 3.307 and § 3.309(e), regardless of MOS. Service elsewhere, such as Thailand, Korea's DMZ, or other recognized locations, is evaluated on its own location and date rules.
Fuel, hydraulic fluid, and solvent contact
Common occupational factor
Huey maintenance involved routine handling of jet fuel (JP-4 in that era), hydraulic fluid, engine oil, and cleaning solvents.
Combat flight and casualty-handling stressors
Assignment-dependent
Crew chiefs and door gunners in combat units could face hostile fire, crashes, hard landings, and loading wounded or killed soldiers.
Climbing, lifting, and vibration
Common occupational factor
Inspections required climbing onto the cabin roof and tail boom; component changes involved heavy lifting, and flight duty involved sustained airframe vibration and hard landings.
02 / Your service
What did you actually do?
Your MOS is the starting point. Your actual assignment, era, equipment, location, and duties determine which parts of the occupational history are relevant. Use the Evidence Builder below to select your actual duties and see records that may corroborate them.
67Ns performed daily, intermediate, and periodic inspections on the UH-1, serviced fuel, oil, and hydraulic systems, and removed and installed components such as the T53 turbine engine, transmission, tail-rotor drive shafts, and main-rotor parts. Crew chiefs pre-flighted and post-flighted the aircraft, and in combat units often flew every mission the aircraft flew, which could mean door-gun duty, loading wounded or cargo, hot refueling, and repairs at forward landing zones. Work was outdoors much of the time, on revetted flight lines and at fire bases, and long days were common when aircraft availability drove the schedule.
67N is an obsolete Army designator. The UH-1 was retired from active Army service, and no current MOS maintains it; later utility-helicopter maintenance moved to the UH-60 (67T, now 15T), which is a different airframe and is not treated as a successor here. Many 67N records come from the Vietnam era, when Hueys were the Army's primary utility and air-assault helicopter, and others from the Cold War, Guard, and Reserve years that followed. Unit, location, and dates matter more than the code.
Duties that may vary by assignment
- Daily, intermediate, and periodic inspections of the UH-1 airframe
- Removing and installing the T53 engine, transmission, and drive-train components
- Servicing fuel, oil, and hydraulic systems
- Crew chief duties, including door-gunner duty in combat units
- Hot refueling and rearming at forward sites
- Loading cargo, troops, or casualties
- Field repairs at landing zones and fire bases
Related historical codes: 67N UH-1 Helicopter Repairer — discontinued designator with no direct modern equivalent
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Military Occupational Evidence Builder
Based on what you actually did in the military, what records might document it? Select only what applied to you. No name, file number, contact details, free text, or upload. Nothing is saved or sent.
Military service
Army · 67N UH-1 Helicopter Repairer (obsolete)
For another specialty, open its guide from the MOS library. A job code alone does not establish individual duties or exposure.
Era(s) of service
Deployments
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Your Evidence Builder identifies records that may document your service history. If VA has already decided your claim, the next question is different: what did VA accept, what did VA reject, and why?
Request a free decision review03 / Corroboration
Building your occupational history
Records matter because they can connect a job title to an individual's actual work and circumstances.
Turbine, rotor, and weapons noise
Records that may corroborate it
- · Enlistment and separation audiograms, and any hearing-test entries in service treatment records
- · Flight records or crew-member orders showing flight status
- · Award citations or unit records describing aircrew or door-gunner duty
Limit: Documented noise supports the in-service event only. A current hearing disability under 38 CFR § 3.385 or a tinnitus complaint, and a medical link, are still required.
Vietnam-era service and herbicide exposure
Records that may corroborate it
- · DD-214 foreign service and decorations entries (e.g., Vietnam Service Medal)
- · Personnel records showing unit assignments and dates
- · Unit histories for the aviation company or battalion
Limit: The 67N MOS does not establish Vietnam service or herbicide exposure. Qualifying location and dates come from personnel and unit records, and a listed condition still requires a diagnosis.
Fuel, hydraulic fluid, and solvent contact
Records that may corroborate it
- · Evaluations or award citations describing maintenance duties
- · Unit safety or occupational health records, if retained
Limit: The MOS does not establish contact with a specific chemical or level of exposure; a current diagnosis and medical opinion are required.
Combat flight and casualty-handling stressors
Records that may corroborate it
- · Combat awards (Air Medal, Combat Action/Infantryman-equivalent badges, Purple Heart)
- · Unit histories, aircraft loss records, and after-action reports
- · Statements from fellow crew members
Limit: A stressor still needs a current diagnosis and a medical link. Under 38 CFR § 3.304(f), fear of hostile military activity consistent with the circumstances of service can be relevant, but the MOS alone does not show it occurred.
Climbing, lifting, and vibration
Records that may corroborate it
- · Sick call and line-of-duty entries for strains, falls, or crashes
- · Flight records documenting flight time
Limit: These demands do not by themselves establish that a specific joint or spine condition is related to service; a current diagnosis and medical opinion are required.
04 / Evidence standard
What your MOS can — and cannot — establish
May help document
Work performed, circumstances of service, consistency of an alleged exposure, and the nature or duration of duties where supported by individual records.
Does not automatically establish
A diagnosis, medical causation, severity, percentage, presumption, or entitlement to service connection.
05 / Medical evidence
Conditions that may be relevant to the occupational history
This is not a list of conditions to claim. A veteran's actual diagnosis and individual service record determine relevance; occupational evidence is not medical causation.
Hearing +
Tinnitus and hearing loss
Why the occupation may matter: Turbine engines, open-door flight, and door-gun fire are sustained high-noise conditions of 67N duty.
Records and clinical evidence: Audiometry meeting 38 CFR § 3.385, service hearing tests, and a medical opinion.
Occupational history alone does not establish this diagnosis or its medical relationship to service.
Herbicide-listed conditions +
Conditions on VA's herbicide list (e.g., type 2 diabetes, ischemic heart disease)
Why the occupation may matter: Relevant only where personnel records show qualifying Vietnam or other recognized service.
Records and clinical evidence: Records showing qualifying location and dates, plus a current diagnosis.
Occupational history alone does not establish this diagnosis or its medical relationship to service.
Mental health +
PTSD or related conditions
Why the occupation may matter: Combat flight, crashes, and casualty handling are documented features of some Huey crew service.
Records and clinical evidence: Current diagnosis, a stressor consistent with service, and a medical opinion.
Occupational history alone does not establish this diagnosis or its medical relationship to service.
Spine / joints +
Back, neck, and knee conditions
Why the occupation may matter: Climbing the airframe, heavy component work, vibration, and hard landings load the spine and joints.
Records and clinical evidence: Current diagnosis, in-service treatment or duty records, and a medical opinion.
Occupational history alone does not establish this diagnosis or its medical relationship to service.
06 / Exposure record
ILER and toxic exposure
For applicable exposure-related claims, VA may review the Individual Longitudinal Exposure Record (ILER) and a toxic exposure risk activity (TERA) memorandum along with deployment and occupational records. An ILER entry does not automatically establish exposure or service connection.
07 / After a decision
Why a 67N claim may still be denied
An exposure finding is not the same as a grant. These are examples from the researched guide, not predictions about a particular case.
VA may accept
A duty or event consistent with the service record
But may deny
A diagnosis, medical relationship, or rating element
Record to examine
Decision findings, service and private treatment records, examination rationale, and medical opinions.
Vietnam service not shown in the record
Decisions sometimes turn on whether personnel records place the veteran in a recognized location on recognized dates, not on the MOS.
Normal separation hearing test relied on
Older separation exams sometimes used whispered-voice tests or limited audiometry; examiners may not address the full noise history.
Flight duty treated as unverified
When flight records are missing, award citations, unit histories, and crewmember statements may help show aircrew duty.
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67N questions
Is 67N the same as 15T or 67T?
No. 67N maintained the UH-1 Huey; 67T and later 15T maintain the UH-60 Black Hawk. The Huey MOS was discontinued without a direct successor, so this guide treats 67N on its own.
Does being a 67N mean I was exposed to Agent Orange?
No. The herbicide presumption depends on qualifying location and dates of service, not the MOS. Personnel records showing where and when you served are what matter.
My records are from the Vietnam era and incomplete. What else can show my duties?
Award citations, unit histories, aircraft loss records, and statements from fellow crew members are common sources when individual records are thin.
Sources and legal references
General education only; not legal or medical advice. Oakridge Claims is a private business, not affiliated with or endorsed by VA. Nothing here establishes a representative-client relationship or guarantees a result. Free accredited VSO help is available.