Technical Resources
Videos, articles, case studies, and answers from QTC's aircraft ECS repair engineers.
Videos
See videos about some of our reparable components and their relevant part numbers.
Technical Articles
How aircraft ECS components work, fail, and get repaired.
Case Studies
Real component repair outcomes for real operators.
FAQ
Answers on capabilities, certification, and logistics.
Videos
All 5 videos →
ATR 42/72 ECS Cooling Turbine Overhauls
Air Cycle Machines · ATR 42/72
Pilatus PC-12 (non-NG) Cabin Cooling Turbines
Air Cycle Machines · Pilatus PC-12
CRJ Horizontal Stabilizer Trim Actuator (HSTA)
Actuators · Bombardier CRJ
UH-60 Black Hawk / Fire Hawk Hydraulic Utility Pump Module
Hydraulic Components · UH-60 Black Hawk
King Air Hydraulic Power Packs
Hydraulic Components · Beech King Air
Latest Technical Articles
How Aircraft Environmental Control Systems Work
A plain-language engineering walkthrough of the aircraft ECS, from hot engine bleed air through the cooling pack to conditioned, pressurized cabin air.
Aircraft Heat Exchanger Cleaning: Process, Intervals, and Inspection Criteria
A technical guide to aircraft heat exchanger cleaning — how cores foul, the cleaning and inspection procedure, and the maintenance intervals that drive off-wing restoration.
Air Cycle Machine Overhaul: A Complete Process Overview
A technical walkthrough of the air cycle machine overhaul process, from incoming inspection and ACM bearing failure analysis through turbine-wheel work, balancing, and final acceptance test.
What Is Beyond Economic Repair (BER) in Aviation?
Beyond Economic Repair (BER) describes a component for which no approved repair exists or for which repair would cost more than replacement. Engineering-led BER recovery develops an approved repair to return condemned hardware to service.
What Is an FAA Part 145 Repair Station? A Buyer's Guide
An FAA Part 145 repair station is an air agency certificated by the FAA to maintain, repair, and overhaul aircraft components. This guide explains ratings, accountability, and how FAA and EASA Part 145 approvals compare.
Case Studies
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