Annual & 100-hour inspections
Annual inspections with IA, 100-hour inspections, discrepancy assessment and a clear conversation about the work your aircraft needs.
Discuss an inspection

RAVALLI COUNTY AIRPORT · KHRF
In Hamilton, Montana. Ready for the next horizon.
Careful work, from the airframe up.
406 AIRFRAMES INC.
Based at Ravalli County Airport in Hamilton, Montana, 406 Airframes provides aircraft repair, maintenance and modifications with Inspection Authorization (IA) available for annual inspections.
We work with aircraft owners throughout Montana and welcome pilots flying in for service. Tell us what you fly, what needs attention and where you want to go next.
Read our reviews on GoogleTHE WORK WE DO
Routine care, a repair that needs attention, or an upgrade you’ve been planning. Start with a conversation about your aircraft.
Annual inspections with IA, 100-hour inspections, discrepancy assessment and a clear conversation about the work your aircraft needs.
Discuss an inspectionScheduled maintenance, troubleshooting, aircraft repairs and modifications. Share your aircraft details and project goals so we can discuss the scope.
Discuss your aircraftAvionics upgrades, instrument replacements and panel improvements for the way you fly. We’ll discuss compatibility, installation and project requirements.
Plan an upgradeOUR AREA OF EXPERTISE
Structural and composite repair are central to our work. From damage assessment to repair planning, we focus on the individual aircraft and the scope of the repair.
Airframe damage assessment and structural repair. Send wide shots and close-ups of the area needing attention to help begin the conversation.
Composite damage assessment and repairs, with the aircraft, materials and repair requirements guiding the approach.
BUILT AROUND THE WAY YOU FLY
We particularly enjoy backcountry aircraft and the modifications that help get them there safely.
Whether you’re preparing for remote strips or considering changes to your aircraft, bring us your goals. We can discuss the maintenance, equipment and modification work that fits your aircraft and intended flying.
Talk backcountry modificationsRavalli County Airport · Hamilton, Montana
Serving owners statewide. Fly-in customers welcome.
BEFORE & AFTER CONCEPTS
Explore aircraft structural repair and avionics upgrade concepts. Contact us to discuss the possibilities for your aircraft.


WHAT HAPPENS NEXT
Send your aircraft make and model, registration, location, work needed and preferred timing. Photos are welcome.
We’ll discuss your project, aircraft requirements and availability before confirming an approach.
Agree on the work and timing, then arrange your shop visit or fly-in. An inquiry does not reserve a service slot.
A FEW USEFUL DETAILS
We do not offer propeller overhaul, instrument overhaul, pitot-static or transponder testing, or paint services. Instrument replacement and avionics upgrades can be discussed separately.
Yes. We welcome fly-in customers and work with aircraft owners throughout Montana. Contact us to discuss your aircraft, the work needed and arrangements before making a trip.
Yes. IA is available for annual inspections. We also offer 100-hour inspections and aircraft repair, maintenance and modifications.
Your contact information, aircraft make and model, registration, current airport, service needs, preferred timing and any helpful photos. For damage, include a wider view and close-ups.