Vol. 128, No. 4 * Pages 399–496 * October - December 2024

A numerical simulation of the 15 knots tailwind triggering the go-around maneuver of 8 flights at the Soekarno-Hatta International Airport was explored. The Advancer Weather Research an Forecasting (WRF-ARW) numerical weather prediction model was used to simulate the events. The results showed that WRF-ARW with temporal and spatial resolutions of 2 minutes and 1 km could simulate the tailwind events. The tailwind was triggered by the background wind from the Indian Ocean and by cloud initiation near the final approach path (FAP), then the tailwind speed was reduced by the wind gust south of the FAP at 11:00 UTC, on November 3, 2021. These findings cannot be resolved by analyzing in-situ, weather satellite, and radar data with limited coverage and sensing the wind out of the cloud. It suggests that high-resolution numerical simulation can be used in the operation of aviation weather investigation. Assimilating observation data to the model is essential to be investigated for further study to understand the tailwind mechanism more accurately.