On 21st March, 2022 Saudi Airline flight SVA724, Boeing 777-368(ER) aircraft, Reg. No. HZ-AK11 was a scheduled passenger flight which was operating from King Khalid International Airport, Riyadh to Islamabad International Airport (IIAP), Islamabad on route HANGU – J139 – KALMI – ISLAMABAD. When SVA724 came in contact with Cherat Approach South, it was given descent to Flight Level (FL) 170 by Cherat Approach Controller along with Standard Instrument Arrival (STAR) KALMI 1A for Instrument Landing System (ILS) Approach on Runway (R/W) 28L. Cherat Approach Controller also passed traffic information to SVA724 about Military aircraft which was holding over position KALMI and maintaining single level FL160. Once SVA724 was 3 NM west of position KALMI, it reported TCAS – RA due traffic. At that time, SVA724 was in descending phase out of FL177 for FL170 and initiated RA climb up to FL181. Both SVA724 and military aircraft were in contact with Cherat Approach South at the time of TCAS – RA. Later, SVA724 continued for Approach to land at IIAP, Islamabad.
