The critical meeting on terror held at the General Staff Headquarters was interrupted by a notice from the MİT. After the meeting that followed the notice, procedures related to the flight ban, which was the first of the four instructions having been sent to all Turkish Armed Forces (TAF) units, were completed and 36 airplanes in the air were made to land in their fleets.
With the beginning of the coup attempt, hectic hours started at the General Staff Headquarters. First, some guards of Chief of General Staff General Akar's were shot. Akar’s aide-de-camp, Lieutenant Colonel Levent Türkkan, Akar’s Assistant Adjutant Lieutenant Serdar and armed soldiers serving for the Special Forces entered the room where Akar was and tried to arrest him. They tried to make Akar sign the coup declaration by force of arms. As Akar refused to sign the declaration, they strangled Akar’s neck with a belt this time. In the meantime, Deputy Chief of General Staff General Yaşar Güler was also taken hostage by an officer from his close team by force of arms.
The guarding staff of the Prime Ministerial Kızılay headquarters heard gunshots from the General Staff Headquarters and conveyed this information to the Prime Ministry Coordination Center around 09.35 p.m. Following this notice, the officials of the Armed Forces Command Operation Control Center (SKKHM) were called by the Prime Ministry and told that the gunshots stemmed from military exercises.
Following these extraordinary developments, Land Forces Commander General Salih Zeki Çolak called Chief of General Staff Hulusi Akar. The person who picked up the phone was Akar’s aide-de-camp Lieutenant Colonel Levent Türkkan. Türkkan summoned Uyar to the headquarters, saying, “Our Chief of General Staff is waiting for you and especially our Land Forces Chief of Staff General İhsan Uyar to come to the headquarters.” After arriving at the headquarters, Çolak and Uyar were seized by coup-plotters at the entrance of the General Staff Headquarters. Senior Sergeant Bülent Aydın, who was trying to prevent this situation, was martyred by putschist soldiers. Also, Chief Guard Captain Burak Akın was injured. Bülent Aydın made history as the first martyr of the coup attempt.
General Hulusi Akar was taken by helicopter to the 4th Main Jet Base Command in Akıncı.
After the extraordinary mobility at the National Intelligence Organization (MİT) Headquarters and a meeting held at the General Staff, the coup-plotters realized that their plan for a coup had been uncovered. They applied an earlier time for the coup attempt, which they had planned to carry out at 03.00 a.m., July 16, and initiated all the phases of 'The Operation Lightning' plan.