36E83-6QA — Air Turbine Starter Repair & Overhaul

Component Overview

The air turbine starter uses high-pressure bleed air, supplied from the APU, a ground cart, or a running engine, to drive a turbine that spins the engine accessory gearbox up to light-off speed during start. Mounted on the gearbox, it converts pneumatic energy through a turbine wheel and reduction gearing to a clutch and output shaft, then disengages automatically once the engine accelerates past starter speed. Subject to high rotational speed and thermal and torque loads, it commonly experiences turbine blade erosion and foreign-object damage, bearing wear, clutch slipping or failure to disengage, gear and spline wear, oil seal leakage, and containment-related distress. Performance, leakage, and clutch function checks, with disassembly inspection, guide bearing, clutch, and turbine overhaul.

Aircraft Application

Part number 36E83-6QA (Air Turbine Starter) is installed on the McDonnel Douglas A-4 Skyhawk. QTC supports operators and MROs servicing this platform with certified repair and overhaul.

Our Repair Capability

QTC repairs and overhauls 36E83-6QA to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our team — including former OEM pneumatic & air management engineers — performs teardown, inspection, cleaning, component replacement, functional testing, and certification, returning a serviceable unit with the appropriate airworthiness release. We also develop repairs for rejected and beyond-economic-repair (BER) hardware.

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Frequently Asked Questions