Aerospace & Defense Manufacturing
Aerospace Production Is Scaling Faster Than Your EHS Program
New lines, second shifts, and new chemistries create exposure, monitoring, and permitting obligations that lean EHS teams are not staffed for, and a single OSHA inspection can group citations at up to $16,550 per serious violation (2026 levels). iSi delivers the assessment, monitoring, and program work from a home base that has been building aircraft for over a century: Wichita, Kansas. Fixed pricing, same-day response, 40 states.
What a Scale-Up Actually Triggers
The contract is signed, the rate increase is committed, and the facility changes start: a new coating line, an added shift, a composite layup cell, expanded NDT. Each one carries EHS obligations that attach before or at the production change, not after the first incident or inspection.
New or expanded chemistry
Chromate primers and conversion coatings put hexavalent chromium in play, a 5 µg/m³ PEL with an action level of 2.5 µg/m³ under 29 CFR 1910.1026, low enough that exposure assessment is not optional guesswork. Sealants and solvents bring hazard communication and ventilation questions with them.
More machines, more hours, more noise
Riveting, forming, and machining at higher rates push time-weighted noise exposure toward the 85 dBA action level of 29 CFR 1910.95, the threshold where monitoring, audiometric testing, and a written hearing conservation program become requirements, not best practices.
Respirators without a program
Required respirator use demands medical evaluation, fit testing, and a written program under 29 CFR 1910.134 before the first shift wears one. A scale-up that adds spray operations or sanding on composite structures routinely crosses this line unnoticed.
Equipment installs ahead of permits
Many state air programs require a construction or modification permit issued before equipment is installed. Sequenced late, a permit becomes a schedule risk; skipped, it becomes federal Clean Air Act exposure at up to $124,426 per day per violation.
What We Do for Aerospace Suppliers
Exposure Assessment & IH Monitoring
Baseline and change-driven sampling for chromates, solvents, metals, and composite dust, same-day fixed-price quotes, results interpreted against the correct limits, written into defensible reports.
Industrial hygiene →Noise Monitoring & Hearing Conservation
Dosimetry and area mapping at production rates, action-level determinations, and the written program and audiometric scheduling that follow when 85 dBA is in reach.
Noise & IH services →Respiratory Protection Programs
Written programs, medical evaluation coordination, and fit testing that stand up to an inspector reading 1910.134 line by line.
Safety consulting →Air Permitting for Expansion
Applicability determinations, permit applications and modifications sequenced with your install schedule, so the permit clock never surprises the production plan.
Air permitting →Legacy Facility Renovation
Pre-renovation hazmat surveys and licensed asbestos abatement for the mid-century plants and hangars where aerospace scale-ups actually happen. Survey through clearance, one contractor.
Asbestos abatement →Training
HAZWOPER, hazard communication, respiratory protection, and site-specific courses delivered at your facility, scheduled around production, not the other way around.
Training catalog →Three Ways to Engage
Scoped to how much EHS capacity you already have, from a single assessment to an embedded program.
Scale-Up Baseline
A fixed-price exposure assessment of the new or changed operation, sampling plan, monitoring, results against the correct limits, and a prioritized gap list. Same-day quote response.
Expansion EHS Package
The baseline plus permit applicability, written program updates (respiratory, hearing conservation, HazCom), and training scheduling, the full compliance side of one facility change, handled as one project.
EHS COOP, Embedded Support
Ongoing part-time EHS ownership starting around $15,000/year, against $100,000-$150,000 plus ~30% burden for a full-time hire. Monitoring calendars, training matrices, program upkeep, inspection readiness.
EHS COOP program →Why iSi for Aerospace Work
iSi is headquartered in Wichita, Kansas, a city that has been building aircraft for more than a century, where aviation manufacturing is not a vertical on a slide but the economy our company grew up inside. Our industrial hygienists and crews work in active, access-controlled production facilities as a matter of routine: badging and escort procedures, ITAR-aware conduct, and sampling scheduled around rate, not against it. That experience travels; we support manufacturing clients across 40 states with the same fixed-price, same-day-response model. Our industrial hygiene teams serve aerospace and defense manufacturers from Wichita, St. Louis, Kansas City, and Tulsa.
And because iSi self-performs industrial services, the firm that finds the problem can fix it, the exposure assessment, the abatement before the renovation, and the program that keeps it fixed come from one contractor instead of three handoffs.
Frequently Asked Questions
What EHS obligations does a production scale-up trigger at an aerospace plant?
A new line, a second shift, or a new chemistry typically triggers several at once: exposure assessment for any newly introduced or expanded hazard (hexavalent chromium carries a 5 µg/m³ PEL and a 2.5 µg/m³ action level under 29 CFR 1910.1026), noise monitoring and a hearing conservation program at the 85 dBA action level (1910.95), medical evaluations and fit testing before required respirator use (1910.134), hazard communication updates for new sealants and solvents (1910.1200), and, before equipment installs, a check of whether the change needs a state air permit or permit modification.
Do we need an air permit modification before adding a coating line or expanding paint operations?
Often, yes, and the sequencing matters, because many state programs require construction or modification permits to be issued before the equipment is installed, not after. Operating outside permit requirements carries federal Clean Air Act exposure up to $124,426 per day per violation. iSi evaluates permit applicability as part of expansion planning so the install schedule and the permit clock are reconciled before commitments are made.
Can iSi support a supplier that has no dedicated EHS staff?
Yes, that is the exact profile the EHS COOP program was built for. Embedded part-time EHS support starts around $15,000 per year, against $100,000-$150,000 plus roughly 30% burden for a full-time hire. The program covers the recurring obligations, monitoring schedules, training matrices, written program updates, inspection readiness, so production leadership is not carrying compliance on the side.
Does iSi work inside active aerospace production facilities?
Yes. iSi is headquartered in Wichita, a city that has been building aircraft for over a century, and our industrial hygienists and crews work inside active, access-controlled manufacturing facilities, badging, escort, ITAR-aware conduct, and scheduling around production are standard practice, not special arrangements. Services are available across 40 states.
Scaling Production? Get the EHS Side Scoped First.
Fixed-price assessment quotes with same-day response. Call (888) 264-7050 or send the details of what’s changing at your facility.
Request a Scale-Up Assessment