The growth of air transport has led to an increase in air traffic which greatly heightened the probability of mid-air collision. The airport that suffers the most by congestion of air traffic in Indonesia is Soekarno-Hatta International Airport which is also the location of most airprox (air traffic incident) occurrence.
To minimize the probability of air traffic’s accident and incident, air traffic controllers (ATC), including Soekarno-Hatta International Airport ATC, nowadays use Short-Term Conflict Alert and most commercial aircraft are required to have Traffic Collision Avoidance System (TCAS). However, occasionally TCAS gives Resolution Advisory (RA) warning even though the traffic has already been given separation minima based on the regulation and considered safe by the air traffic controller. This event is called TCAS RA with No Risk of Collision,
The objective of this thesis is to analyze the TCAS RA cases with no risk of collision data, to analyze the characteristic differences between TCAS and STCA systems, to analyze AIC No.2 Recommendation from Directorate of General Aviation (DGCA), and to review the regulations related. From data provided by National Transportation Safety Committee, in 2016 there are 15.6% TCAS RA cases with no risk of collision from all airprox events in Indonesia that were occurred in Jakarta-FIR.
This thesis will provide the vertical speed and closing speed limitation calculation for TCAS and also the analysis of five TCAS RA cases with no risk of collision from Airline A&C’s FDR data. From the analysis, it is known that there are various causes that caused TCAS RA warning alerted mostly were caused by high vertical speed and ground speed. To reduce the probability of TCAS RA with no risk of collision it is very recommended for the operator to comply to AIC No.2.