STUDY OF EXPECTED APPROACH TIME CALCULATION IN STANDARD OPERATING PROCEDURES FOR APPROACH CONTROL UNIT SERVICES AT PERUM LPPNPI AMBON BRANCH, INDONESIA
Keywords:
Expected Approach Time (EAT), Standard Operating Procedure (SOP), Approach Control Unit, Perum LPPNPI Ambon Branch, Air Traffic Control (ATC)Abstract
This study examines the calculation of Expected Approach Time (EAT) within the Standard Operating Procedure (SOP)
of the Approach Control Unit at Perum LPPNPI Ambon Branch, as no standardized EAT procedure currently exists. EAT
is vital for air traffic management, directly affecting efficiency, safety, and flight orderliness. The study reviews Air
Traffic Control (ATC) methods for calculating and providing EAT, its impact on traffic flow and safety, and its role in
special situations such as lost communication. Using a qualitative descriptive approach, data were collected through
observation at Pattimura Airport, structured interviews with the Operations Manager and ATC personnel, and document
analysis. Results indicate that EAT provision is suboptimal due to unclear SOP guidance, causing pilot uncertainty,
reduced efficiency, and increased communication load. Recommendations include establishing a clear SOP, ATC
training, and proper EAT implementation.
