Maintenance, Repair and Overhaul Services

About our MRO

ZAMRO - a brand new and advanced MRO in India, 100% owned by Zukovsky Aviation, is committed to provide quality maintance, repair and overhaul services in compliance with CAR-145 supporting more than 5 Aircraft Brands including Sukhoi, Airbus, Boeing, Embraer etc. The service is expected to be available in 2018; pending approval from DGCA.


  • Locations in India: 02
  • Supported Brands: 5+ Aircraft Manufacturers
  • Services: Basic / Advanced MRO

Our Expertise

Types of MRO Checks

This check travels under several common names and post-flight, maintenance pre-flight, service check, and overnight to name a few. It is the lowest scheduled check. Walk around inspection by flight crew is not normally a part of a maintenance program. A daily check is a cursory inspection of the aircraft to look for obvious damage and deterioration. It checks for "general condition and security" and reviews the aircraft log for discrepancies and corrective action. The accomplishment of the daily check requires little in the way of specific equipment, tools, or facilities. A basic requirement is that the airplane remains airworthy. Usually, a daily check is accomplished every 24 to 60 hours of accumulated flight time.

Examples of daily check items include:

  • Visually inspect tail skid shock strut pop-up indicator.
  • Check fluid levels.
  • Check general security and cleanliness of the flight deck
  • Check that emergency equipment is installed.

This is the next higher level of scheduled maintenance. It is normally accomplished at a designated maintenance station in the route structure and includes the opening of access panels to check and service certain items. Some limited special tooling, servicing, and test equipment is required. The 'A' check includes the lower check, i.e. Daily check.

Examples of 'A' check items include:

  • General external visual inspection of aircraft structure for evidence of damage, deformation, corrosion, missing parts.
  • Check crew oxygen system pressure.
  • Operationally check emergency lights.
  • Lubricate nose gear retract actuator.
  • Check parking brake accumulator pressure.
  • Perform Built-in Test Equipment (BITE) test of Flap/Slat Electronics Unit.

This is a slightly more detailed check of components and systems. Special equipment and tests may be required. It does not involve, however, detailed disassembly or removal of components.

Contemporary maintenance programs do not use the 'B' check interval. For a number of reasons, the tasks formerly defined for this interval have, for many airplanes, been distributed between the 'A' and 'C' check.

The two checks ('C' & 'D') are traditionally known as heavy checks. They are normally accomplished at the main maintenance base of the airline where specialized manpower, materials, tooling, and hangar facilities are available.

This is an extensive check of individual systems and components for serviceability and function. It requires a thorough visual inspection of specified areas, components and systems as well as operational or functional checks. It is a high-level check that involves extensive tooling, test equipment, and special skill levels. 'C' checks remove the airplane from the revenue schedule for 3 to 5 days. The 'C' check includes the lower checks, i.e. 'A,' 'B,' and Daily checks.

Examples of 'C' check items include:

  • Visually check flight compartment escape ropes for condition and security.
  • Check operation of DC bus tie control unit.
  • Visually check the condition of entry door seals.
  • Operationally check flap asymmetry system.
  • Pressure decay check APU fuel line shroud.
  • Inspect engine inlet TAI ducting for cracks.
  • Operationally check RAT deployment and system.

This can also be referred to as the Structural check. It includes detailed visual and other non-destructive test inspections of the aircraft structure. It is an intense inspection of the structure for evidence of corrosion, structural deformation, cracking, and other signs of deterioration or distress and involves extensive disassembly to gain access for inspection. Special equipment and techniques are used. Structural checks are man-hour and calendar-time intensive. The 'D' check includes the lower checks, i.e. 'A,' 'B,' 'C,' and Daily checks. This check removes the airplane from service for 20 or more days.

Examples of 'D' check items include:

  • Inspect stabilizer attach bolts.
  • Inspect floor beams.
  • Detailed inspection of wing box structure .