Any airlines must need air plans to catch passengers to fly to travel. So, any air plans will need often to fly. Every flight will need long time to fly, e.g. short trip needs to fly less than five hours, even long trip needs to fly more than five hours, even ten hours. If many passengers choose the country to travel, the air plan needs to flyfrequently to catch every flight passengers to go to the travelling destination frequently. So, any airlines air plans often need to check whether they have any engine machines has broken, need to be repaired in possible in order to let passengers feel the airline air plans are safe. If the airline's any air plans have occurred any accidents when they are flying, even the accidents cause any one passengers hurt, even death. Then, these flying accidents will let passengers feel life risk to choose this airline's any air plans to catch to fly. IN special, long time trip(s) flight(s). So, lean maintenance and engine check is needed to consider for any one airplane to any airline in order to improve efficiencies and minimize costs, maintenance, repair, and overhaul services in the aviation industry sector, even avoiding any flying accident occurrence or reducing serious flying accidents occurrence chance to bring any one passenger hurt, even death when they are catching any one of the airline air plans to travel. Thus, any one of airline safety is one important successful factor to any airlines.Instead of passenger safety aspect, the flying logistics safety factor is also important. The central tenet of the lean to a flying process can mainfest in a variety of ways, as over stalledand underused inventory and misallocated labour, time transportation and logistics. From a customer's perspective, value-added activities are necessary and customers are willing to pay for activities(Bamber, 2000, Glass, 2016). For example, improvements caused by lean introduction in aviation industry in order to avoid misallocated labour time, increasing number of old broken tools, and obsolute jigs and fixtures. Aviation MRO services have been reported by the MIT Lean Aerospace Initiative (2005) to result in: (1) Set up time: 17 to 85 percent improvement.(2) Lead time: 16 to 50 percent improvement.(3) Labour hours: 10 to 71 percent improvement.(4) Cost: 11 to 50 percent improvement.(5) Productivity: 27 to 100 percent improvement.(6) Cycle time: 20 to 97 percent improvement.(7) Airline airplane manufacturing factory floor space: 25 to 81 percent improvement.(8) Travel distance ( people and products): 42 to 95 percent improvement.(9) Airplanes engine inventory or work in progress: 31 to 98 percent improvement.(10) Scape, rework, deflects or inspection: 20 to 80 percent improvement.Hence, any airlines' airplanes need to be achieve any one of above improvement at least percent level in order to keep airplane's accident occurrence chance to the least level. Moreover, airplanes' pilot employees their flying experiences or flight numbers factor is also important to influence airplane safe flying issue. Because if the pilot has less flying expereince or he is not proficient pilot, or his flight number is less. This pilot's individual flying factor will also influence the airplan's safety when he is driving the airplane. So, any airlines need to consider how to train any one of pilot to be one proficient pilot, because id less experienced pilot, he/she is not proficient to drive any one airplane to fly. Then, the flying accident occurrence chance will also raise. It is one critical successful factor to influence passengers' confidence to choose the airline's airplanes to catch, instead of maintenance repair and checking engines factor.