Sigma Aerospace MRO is Australia’s largest privately-owned, multi-site Part 145 organisation. Certified by CASA, EASA and DASR, and backed by CAR 30 and ISO 9001, we deliver heavy, line and component maintenance that meets the exacting standards of commercial airlines and Defence operators.

Network & Reach

Tamworth – heavy-maintenance hub for D-checks, structural mods and fleet re-life.

Sunshine Coast – Southern Hemisphere’s most complete Lycoming & Continental overhaul shop (QEC build-ups, turbo/fuel accessories, prop governors).

Adelaide – line-maintenance base plus 24/7 AOG teams covering APAC.

Core Capabilities

Heavy & line maintenance, defect rectification and avionics upgrades on Dash 8 Classic/Q400, King Air, Saab 340, PC-12, Caravan, ATR 42/72, Emb 120/190, rotary assets and GA < 5 700 kg.

Fixed- & rotary-wing composite/structure repair, standalone paint, NDT, machining and calibration laboratories.

Full piston-engine lifecycle support with accessory, hydraulic, landing-gear and instrument shops under one roof.

Performance & Tooling
Proprietary Production Planning & Control (PPC) and Smart Planning Gateway cut pre-planning time by 75 % and have delivered heavy checks 30 days early, saving customers millions. All work sits inside a CASA-compliant Safety Management System for unwavering quality and safety.

People Advantage
Our integrated Part 147 college and workforce division recruit, train and retain engineers, supplying AMEs, B1/B2 LAMEs and structures teams nationwide—even under Australia’s exclusive aviation On-Hire Labour Agreement.

Why it matters
From an overnight AOG to a fleet-wide heavy-maintenance programme, Sigma Aerospace MRO keeps aircraft flying—on time, on budget, and ready for the next mission.


Sigma Aerospace MRO

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Sigma Aerospace MRO

Org chart

Teams

Offices

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