PT6A Hot Section Component Repair & Support
Explore supported component categories, repair evaluation services, exchange options, and engine variant coverage.
PT6A Overview
Supporting One of Aviation’s Most Proven Engine Platforms
The Pratt & Whitney PT6A is one of the world’s most widely used turboprop engines, powering aircraft across business aviation, cargo transport, agriculture, flight training, regional airlines, and utility operations. Since its introduction in 1963, more than 65,000 engines have been produced. Its enduring success is built on an innovative reverse-flow design, exceptional reliability, and continuous evolution.
As PT6A fleets continue operating worldwide, specialized repair expertise plays an increasingly important role in helping overhaul facilities and operators maintain reliable service while managing maintenance costs.
ATC focuses specifically on non-rotating hot section components across a wide range of PT6A engine variants.
Component Repair Support
Specialized PT6A Hot Section Components
ATC provides repair and restoration support for a broad range of non-rotating PT6A hot section components, including:
- Exhaust Ducts
- Exit Ducts
- Combustion Liners
- Compressor Turbine Shroud Housings
- Power Turbine Shroud Housings
- Power Turbine Stator Housings
- Bearing Covers
- Structural Hot Section Components
- Related Non-Rotating Assemblies
Our repair capabilities continue to evolve as new repair opportunities and approved repair processes are developed.
Using the Component & Model Guide
Find Current Repair Support by Component and PT6A Series
The component and engine-model guide below shows current areas of ATC repair support for non-rotating PT6A hot section components. Use the filters to narrow the list by component type or PT6A series.
Model coverage does not mean every condition on every component is automatically repairable. Final repairability depends on the individual part, observed condition, applicable repair data, and current approved repair capability. If a specific component or model is not shown, contact ATC for confirmation.
C.T. Shroud Housing
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-60A
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67A
PT6A-67D
Small Exit Duct
PT6A-11
PT6A-15AG
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-50
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67D
PT6A-110
PT6A-112
PT6A-121
One Piece Combustion Liner
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-50
Outer Combustion Liner
PT6A-42
PT6A-42A
PT6A-60
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67D
Inner Combustion Liner
PT6A-42
PT6A-60
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67D
Large Exit Duct
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-50
#2 Bearing Cover
PT6A-20
PT6A-20A
PT6A-20B
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-50
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67B
PT6A-67D
#3 Bearing Cover
PT6A-20
PT6A-20A
PT6A-20B
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-50
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67B
PT6A-67D
Lock Plate
PT6A-20
PT6A-20A
PT6A-20B
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-42
PT6A-42A
PT6A-50
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67B
PT6A-67D
P.T. Stator Housing
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-41AG
PT6A-50
PT6A-60
PT6A-65B
PT6A-65R
PT6A-65AR
PT6A-65AG
PT6A-67D
Exhaust Duct
PT6A-3
PT6A-3B
PT6A-6
PT6A-21
PT6A-27
PT6A-28
PT6A-34
PT6A-34AG
PT6A-34B
PT6A-36
PT6A-38
PT6A-40
PT6A-41
PT6A-60
PT6A-65
PT6A-67
PT6A-110
PT6A-112
PT6A-114
Containment Band
PT6A-21
PT6A-27
PT6A-28
P.T. Shroud
PT6A-41
PT6A-65
Repair Evaluation
Every Component Has a Different Story
Not every damaged component requires replacement.
ATC evaluates components individually to determine repair options, serviceability, and available approved repair processes.
Following inspection and evaluation, our team works with customers to identify practical repair solutions whenever possible.
Exchange Pool
Exchange Component Availability
ATC maintains an inventory of PT6A components designed to help customers reduce downtime and improve maintenance flexibility.
Exchange availability may help:
- Reduce aircraft downtime
- Support urgent repair situations
- Improve overhaul scheduling flexibility
- Keep maintenance programs moving efficiently
Availability varies by component type and inventory status.
Please contact ATC for current exchange options.
Parts & Repair FAQ
Common Questions About Component Support, Repair, and Exchange
What PT6A components does ATC repair?
ATC specializes in non-rotating hot section components, including exhaust and exit ducts, combustion liners, compressor turbine shroud housings, power turbine shroud and stator housings, bearing covers, and selected related structural components.
Which PT6A engine models does ATC support?
ATC supports components across a broad range of PT6A variants. The component / model guide on this page shows current coverage by part type. Contact ATC to confirm support for a specific component and condition.
Does ATC repair rotating PT6A components?
ATC’s specialty is non-rotating PT6A hot section components. Contact the team with a specific part number if you are unsure whether a component falls within current repair capability.
Can a damaged PT6A component be repaired instead of replaced?
Often, but not always. ATC evaluates the individual component, its condition, applicable repair data, and available approved processes to determine whether restoration is practical.
Does ATC offer proprietary or extended repairs?
Yes. ATC maintains proprietary extended repair processes for selected PT6A hot section components. Availability depends on the component, condition, and applicable approved repair process.
Does ATC offer exchange components?
ATC maintains an exchange pool for selected PT6A components. Availability varies by component type and current inventory, so contact ATC for current exchange options.