Leading Aircraft MRO Companies Worldwide

Editorial ranking of major global MRO providers.

Ranking method
This is not an official industry league table.

🇩🇪 Lufthansa Technik

GermanyFull-spectrum MRO2025 revenue: €8.049bn

Global aircraft, engine, component, landing gear, cabin, digital and defense services; ~5,100 aircraft under contract.

🇩🇪 MTU Maintenance

GermanyEngine MRO specialist2025 commercial MRO revenue: just over €6.0bn

MTU states its global maintenance network processed about 1,500 engines in 2025 and describes itself as the world’s second-largest MRO service provider.

Official source ↗

🇸🇬 ST Engineering Commercial Aerospace

SingaporeAirframe / Engine / Components / PTF2025 segment revenue: S$4.986bn

Large global aerospace network with engine MRO, nacelles, airframe, components and passenger-to-freighter programs.

Official source ↗

🇺🇸 AAR CORP.

United StatesAviation services / Airframe & Component MROFY2026 company sales: US$3.3bn

Global aviation-services provider serving commercial and government operators, MROs and OEMs; company sales are broader than pure MRO revenue.

Official source ↗

🇫🇷🇳🇱 AFI KLM E&M

France / NetherlandsAirframe / Engine / ComponentsAir France-KLM describes maintenance as a major business line

Supports 3,000+ aircraft and 200+ customers according to Air France-KLM group information; strong third-party engine and component activity.

Official source ↗

🇹🇷 Turkish Technic

TürkiyeFull-spectrum MRO11 hangars · 647,000 m² · 56 aircraft simultaneously

Major global MRO with extensive airframe, component and engine capabilities and a large Istanbul-centered maintenance campus.

Official source ↗

🇭🇰 HAECO

Hong Kong / GlobalAirframe / Cabin / Components / Engine servicesMajor Asia-Pacific MRO network

Long-established global MRO group with heavy maintenance, cabin solutions, components and engine-related services.

Official source ↗

🇸🇬 SIA Engineering Company

SingaporeLine / Base / Components / Engine JVsMajor Asia-Pacific airline MRO group

Singapore-based MRO network with line maintenance, base maintenance and a broad joint-venture ecosystem.

Official source ↗

🇨🇭 SR Technics

SwitzerlandEngine / Component / Line / TrainingGlobal independent MRO provider

Swiss-headquartered MRO with strong engine and component maintenance capabilities and international customers.

Official source ↗

#10

🇺🇸 Delta TechOps

United StatesAirline MRO / Engine / ComponentsLarge airline-affiliated MRO operation

Delta Air Lines technical operations organization providing maintenance for Delta and third-party customers.

Official source ↗

Important: reported revenue scopes differ. Some figures are pure MRO segment revenue, while others cover broader aerospace/aviation-services businesses. Rankings should therefore be read as an editorial scale comparison rather than an accounting league table.