Abstract :
Defect monitoring is an activity carried out by companies that operate
aircraft in order to determine the condition of the components on the aircraft by
calculating the standard deviation, calculating rate and calculating alert level.
Thedata source used was obtained from the recording ATL (Aircraft Technical
Log) written by the pilot and mechanic during the inspection.
ATL (Aircraft Technical Log) recordings are grouped into three types to
make cheking and review easier, namely Maintenance Report, Pilot Report and
Component Unscheduled Removal. Documenting these data is the responsibility
ofthe Engiineering division.
Recording aircraft technical log and defect monitoring on ATR42-500
aircraft at PT Indonesia Transport & Infrastructure, Tbk is carried out routinely
forperformance monitoring and meeting the program relibility requirements
listed in CASR 121.35 (f) concerning ?Time limitation, or standards for
determining time limitation, for overhauls, inspection checks of airframes, engine
propellers, appliances and emergency equipment?.