Abstract :
The air conditioning recirculation system is a sub-system in the air
conditioning system that functions to recirculate and filter 50% of the air from the
cabin so that passengers avoid various kinds of pollution, viruses, bacteria and dust
which can trigger irritation to humans such as stuffy noses, runny eyes and runny
nose. . Based on the results of the damage data that the author took on XYZ airlines
from 2016 - 2019, the damage to the air conditioning recirculation system on the
fan component was quite high with 21 times the damage. Where the most dominant
damage is the fan pop out 5 times and the fan not working 4 times. This research
phase begins with determining critical components using the criticality analysis
method by calculating four criteria where there is a high frequency of damage, the
impact of damage on the sub-assembly, the removal and installation is difficult and
the price is expensive and ABC analysis, then determines the TTF and TTR values
of the components. After that identify damage that often occurs in critical
components of the air conditioning recirculation system. Based on the results of
data processing that has been done, the most critical component is the fan
component with 32 grade score. Furthermore, based on the results of damage
identification, there are 9 types of damage that often occur in fan components,
namely pop out, low flow, bad condition, broken motor, noise, not working,
unstable rotation, not rotate and weak. Where the most dominant damage is the fan
pop out 5 times and the fan not working 4 times.