Our WorkOur Work
The mission of line maintenance is to ensure that every flight is delivered with safety and extensive equipment quality, to provide peace of mind to all customers on board and to all colleagues, who support operations.
However, the line maintenance engineers have a limited turnaround period from aircraft arrival to departure and during the overnight parking of the aircraft.
To make the most of these limited maintenance opportunities, our line maintenance engineers focus on preventive maintenance, such as combining various information from the wide range of data transmitted from the aircraft and subtle signs or observations felt by customers, flight crew, cabin crew, and ground staff, to carry out maintenance before an abnormality or failure occurs.
Many times, maintenance on aircraft parked outdoors is required, thus each engineer makes full use of IT communication devices, checks the aircraft status, and collaborates in real time with support teams in the office to respond swiftly and accurately to diverse issues.
Engineers working in line maintenance are government qualified First-Class Aircraft Maintenance Engineers, as well as in-house qualified Line Verification Supervisors. They continuously hone advanced technical expertise and strong communication skills, and as proud professionals they deliver safe and reliable flights.
To perform aircraft maintenance tasks, the engineer must be thoroughly familiar with the critical, complex, and wide-ranging systems necessary for a safe flight. As the latest aircraft incorporate a variety of advanced technologies and are extremely sophisticated, no single engineer can master every field in full.
Base maintenance is subdivided by skill into airframe systems, electrical equipment, cabin equipment, airframe structures, and painting. Specialists in each field build assured quality through advanced technology and teamwork.
Periodic maintenance is carried out every 12 to 18 months or 5,000 to 7,000 flight hours. One hundred engineers work daily over one to two weeks to disassemble and inspect every part of the aircraft.
The airframe is refurbished to prevent malfunctions in advance, and painting work is done to protect the airframe and to keep looking its best. Each of these quality-assurance tasks forms a crucial foundation for flight safety.
Although base maintenance offer few opportunities to interact directly with customers, we always keep our customers in mind. Through strong teamwork, our engineers uphold maintenance quality to deliver the highest levels of safety and comfort.
At the Engine Maintenance Center, we primarily perform maintenance on JAL Group aircraft engines, including disassembly, assembly, test runs, repairs, inspections, and cleaning of their components.
Together with engine manufacturers, we determine the appropriate depth of maintenance, and to date have produced more than 10,000 engines of high quality.
In actual work, we disassemble engine components down to individual units, inspect every blade and every bolt, repair and examine components that can be serviced in-house, and carry out assembly and test runs.
We work on the following engine models: PW4074/4077, PW4074D/4077D/4090, CF6-80C2 series, GE90-94B, GE90-115B, GEnx-1B series, and CFM56-7B series.
By learning and applying the mindset, namely principles, and manners, namely basic practices, expected of maintenance professionals, we elevate awareness and skills, and consistently deliver high-quality, safe aircraft, including engines, to our customers.
"With the spirit of maintenance, we will create a new JAL and provide our customers with the best service."
In component maintenance, we handle maintenance for virtually all removable aircraft components except engines.
The components we service range from large items such as landing gear and movable surfaces to inflight entertainment equipment and instruments used for flight and control. Broadly speaking, there are two types of aircraft maintenance tasks.
The first is maintenance performed when a malfunction occurs, focusing on troubleshooting such as identifying root causes, and repairs.
The second, known as preventive maintenance, is mandated even when no malfunction has occurred. After a specified period of use, each component must be disassembled down to every screw for inspection, repaired as needed, and restored to maintain the required performance.
At our center, we disassemble, inspect, and repair components removed from aircraft for these reasons, and perform maintenance to return them to sound condition suitable for reuse on aircraft.
Other than maintenance operations for JAL Group aircraft, we do line maintenance, base maintenance, engine maintenance, and component maintenance for more than 50 companies worldwide, both in Japan and overseas. Our maintenance quality is highly regarded globally, and we have obtained licenses from aviation authorities of various countries. Contracted maintenance is a global business that supports the safety of Japan's skies through high-quality maintenance while engaging with foreign aviation authorities and airlines.
Major aviation authority certificates