On 3rd April, 2018 Airblue flight ABQ 211, Airbus 320 aircraft, Reg. No. VN-A650 was operating from Dubai International Airport, Dubai to Benazir Bhutto International Airport (BBIAP), Islamabad. ABQ 211 came in contact with Cherat Approach at position HANGU and was given descent to Flight Level (FL) 150. Subsequently, when ABQ 211 was 40 Nautical Miles (NM) west of position FATEH passing FL180, it was re-cleared to FL160 by Cherat Approach. Once ABQ 211 was 30NM West of position FATEH, it reported Traffic Collision Avoidance System (TCAS) – Resolution Advisory (RA) due Military traffic, a formation 02 x Fighters crossing Air Traffic Services (ATS) route J-139 from North to South at FL140. Mode C of Aircraft No. 2 of formation showed a climb up to FL148 which triggered TCAS – RA of ABQ 211. At that time ABQ 211 was in descending phase out of FL166 for FL160 but initiated RA climb to FL173. At the time of incident, minimum vertical separation of 1,800 feet (ft) existed between the two aircraft. After landing, ABQ 211 submitted Air Traffic Incident Report (Near Collision) at BBIAP, Islamabad Airport.
