At around 6:00 a.m. on September 26, the Beechcraft KingAir 300 series commercial aircraft taking off from Tan Son Nhat airport approached the Long Thanh sky to conduct inspection flights.
Here, the plane approached the low on runway 1 and flew over the runway to check the lighting system and then accelerated to fly up high again.
This flight not only conducts field inspections of runways but also carries out important tasks such as standardizing a series of aviation guidance and monitoring equipment systems in Long Thanh, including 2 ILS/DME systems, 2 PAPI systems, ALS, VOR/DME lighting systems, primary/quarter-level radar (PSR/SSR), ADS-B and related flight methods using signals.

Previously, from around 4am the same day, the authorities were present to check the entire runway, ensuring that there were no obstacles and the technical system operated stably. In addition, fire prevention and fighting forces and medical staff were on duty, ensuring rescue plans in all situations.
On the 20th floor of the air traffic control tower, air control devices are not installed to connect the plane and the air traffic controller. The flight management crew was on duty to closely monitor the flight's progress.
At exactly 4:40 a.m., the entire runway traffic light system was turned on, marking the time when the airport was ready.
This is an important step in the technical completion phase, towards the goal of inaugurating Vietnam's most modern international airport on December 19, and putting it into operation in the first half of 2026.
According to the plan, the standard flight work in Long Thanh will last from September 26 to October 24, 2025. The entire process was implemented by trading technology company Limited (ATTECH), a member unit of Vietnam Air Traffic Management Corporation (VATM), with the participation of a team of experienced experts and international experts.
Standard flights will be conducted both at night and during the day, under many different conditions, to comprehensively assess the accuracy and stability of aviation equipment systems.