TCAS Resolution Advisory Involving Saudi Arabian Airlines Flight 734 (HZ-AKW)

Incident Overview and Flight Details On 5 February 2018, Saudi Arabian Airlines Flight 734, operating a Boeing 772 with registration HZ-AKW, was on a scheduled flight from Jeddah to Lahore. The aircraft was maintaining Flight Level 370 on route G214 when it received a clearance to descend to Flight Level 330. The incident occurred in the vicinity of Lahore, involving reciprocal traffic from Pakistan International Airlines Flight 203, an Airbus A320 with registration AP-BLS, which was operating from Lahore to Dubai at Flight Level 340. The event was reported in the daily IOUDO Report and through a Flight Safety Report submitted by the operator. The Safety Investigation Board (SIB) of Pakistan conducted the investigation in accordance with ICAO Annex-13 and the Civil Aviation Authority (CAA) Pakistan Rules 1994. The primary objective of the investigation was to prevent future accidents and incidents of a similar nature, rather than to apportion blame or liability. The report notes that no injuries were reported to anyone on board either aircraft, and no damage occurred to any of the aircraft involved. Both aircraft continued to their respective destinations following the incident. The meteorological information indicated that no significant weather was reported at the operating altitude at the time of the occurrence. The investigation team included Air Commodore M Usman Ghani as President and Investigation In-charge, and Mr. Zubair Ghazi as Additional Director ATS and Investigator. Audio tape extracts and video records, including radar tracings and screenshots, were obtained for detailed analysis. The SIB issued a memorandum and analyzed all available evidence to determine the findings and safety recommendations.