Backed by 50 years of experience

Columbia Helicopters achieves remarkable flight hours due to our experienced mechanics and extensive maintenance capabilities. Our experience can help you reach your target availability rate.

What Can Columbia Do for You?

Trusted worldwide, commercial and government heavy-lift helicopter operators choose Columbia for a comprehensive range of responsive life-cycle support and MRO services, from tip to tail, in the hangar or in the field.

In addition, Columbia Helicopters hold a Type & Production Certificate for the Columbia 234 Chinook & a Type Certificate for Columbia Vertol 107-II, and is a factory-authorized service center for Honeywell, GE-approved and a NAVAIR-approved MRO facility.

There is a difference between knowing how to maintain a helicopter and understanding what’s required to keep it operating in peak condition. We understand — because we don’t just support them — we fly them, too.


CH-46 | CH-47 | H-3/S-61

Airframe Services

Columbia Helicopters is uniquely qualified to provide airframe services ranging from minor modifications to major structural repairs, in our facility and with rapid on-site field repair teams.

  • Complete reset and modernization
  • Major airframe modifications (structural, avionics and mission equipment)
  • Major airframe repairs (battle damage and normal breakage)
  • Repairs: Fiberglass, composite, tail section
  • Corrosion inspection and reports
  • Engine mount replacement

Engine Services

With two excellent engine test cells on-site, Columbia Helicopters is capable of providing engine MRO services to numerous engines and APUs. We are a factory-authorized service center for the Honeywell T55-714 series engine, and we maintain a Honeywell correlated test cell capable of operating up to 6,000 shaft horsepower.

We also repair and overhaul a range of related accessories:

  • Fuel Controls, Pumps, Manifolds
  • Centrifugal Purifiers
  • Flow Dividers
  • Stator Vane Actuators (SVA)
  • Anti-Ice Valves; Pitot Valves
  • T5 Harnesses
  • Oil Coolers
  • Overspeed Controls
  • Accessory Drive Gearboxes
  • FFADs, PTADs and RADs
  • Oil Jets; Combustion Liners
  • Bypass and Relief Valves
  • Solenoid and Bleed Valves

Additional Services and Capabilities

Dedicated avionics and electric shops

  • Drive, Synch and Cross Shafts
  • Engine Compressors
  • Turbine Wheels
  • Cooling Fans
  • Transmission Internal Rotating Parts
  • Landing Gear, Wheels & Brake
  • Assemblies
  • Power Control Units
  • Pumps & Motors
  • Accumulators
  • Rotor Brakes
  • Reservoirs
  • Manifolds
  • Actuators
  • Dampers
  • Valves
  • Filters

Repair, Overhaul and Balance

Repair and overhaul:

  • Forward and Aft Rotor Heads
  • Swashplates
  • Tail Rotor Drive Shafts
  • Vertical Shafts
  • Flight Control Assemblies
  • Synchronization Shafts and Adapter Assemblies

U.S. Army PVA qualified to repair or overhaul CH-47 Chinook helicopter rotor heads, drive shafts and vertical shaft assemblies.

Including Corrosion Protection

Extensive On-Site Inventory

Inspection, machining, welding, level 3 non-destructive testing; Engineering, logistics, flight test, training and more

  • Forward, Aft, Combining and Engine Transmission
  • Bearing Liner Replacement
  • Mixbox
  • Full run stand capability for all CH-47 and CH-46E transmissions

Operators choose Columbia for responsive life-cycle support and MRO services, from tip to tail, in the hangar or in the field.

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