406 Airframes — Maintenance, Repair, Inspection
White bush airplane at a Montana hangar

RAVALLI COUNTY AIRPORT · KHRF

Aircraft maintenance,
inspections & repair.

In Hamilton, Montana. Ready for the next horizon.
Careful work, from the airframe up.

ANNUAL & 100-HOUR INSPECTIONSSTRUCTURAL & COMPOSITE REPAIRBACKCOUNTRY MODIFICATIONS

406 AIRFRAMES INC.

For the aircraft.
For the adventures ahead.

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 Google

THE WORK WE DO

A solid foundation
for every flight.

Routine care, a repair that needs attention, or an upgrade you’ve been planning. Start with a conversation about your aircraft.

01 / INSPECTIONS

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
02 / MAINTENANCE

Repair, maintenance & modifications

Scheduled maintenance, troubleshooting, aircraft repairs and modifications. Share your aircraft details and project goals so we can discuss the scope.

Discuss your aircraft
03 / AVIONICS

Avionics & instrument upgrades

Avionics upgrades, instrument replacements and panel improvements for the way you fly. We’ll discuss compatibility, installation and project requirements.

Plan an upgrade

OUR AREA OF EXPERTISE

Details matter.
Especially in the structure.

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.

01

Aircraft structural repair

Airframe damage assessment and structural repair. Send wide shots and close-ups of the area needing attention to help begin the conversation.

02

Composite repair

Composite damage assessment and repairs, with the aircraft, materials and repair requirements guiding the approach.

BUILT AROUND THE WAY YOU FLY

A soft spot for
the backcountry.

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 modifications
KHRF
Your Montana base for aircraft care.

Ravalli County Airport · Hamilton, Montana
Serving owners statewide. Fly-in customers welcome.

Find the shop

BEFORE & AFTER CONCEPTS

See the possibilities.

Explore aircraft structural repair and avionics upgrade concepts. Contact us to discuss the possibilities for your aircraft.

Before-and-after concept showing damaged and repaired unpainted aircraft aluminum skin
BEFORE · CONCEPTAFTER · CONCEPT

Aircraft structural repair

Before-and-after concept showing analog instruments and an upgraded glass cockpit
BEFORE · CONCEPTAFTER · CONCEPT

Avionics & panel upgrades

WHAT HAPPENS NEXT

Start with the details.

01

Tell us what you fly

Send your aircraft make and model, registration, location, work needed and preferred timing. Photos are welcome.

02

Discuss the scope

We’ll discuss your project, aircraft requirements and availability before confirming an approach.

03

Coordinate the visit

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

Before you fly in.

What services don’t you offer?

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.

Can I fly in from elsewhere in Montana?

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.

Do you have Inspection Authorization?

Yes. IA is available for annual inspections. We also offer 100-hour inspections and aircraft repair, maintenance and modifications.

What should I include with my request?

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.

LET’S TALK ABOUT YOUR AIRCRAFT

The next step starts here.

Request aircraft service