A Qatar Airways Airbus A320-200, registration A7-AHH performing flight QR-208 from Athens (Greece) to Doha (Qatar), was in a stabilized controlled descent to FL210 descending through about FL250 when the crew received a TCAS Traffic Advisory followed by multiple Resolution Advisories. The captain took manual control of the aircraft and flew the avoidance maneouvers using PFD guidance, the aircraft climbed back to about FL270 before continuing the descent to FL210. The aircraft landed on Doha's runway 34L about 30 minutes later.
Qatar's QAAI rated the occurrence a serious incident and opened an investigation reporting: "During a controlled descent to FL210 at 300 KIAS (-1,000 fpm) within the OBBB FIR, the Airbus A320-231 experienced a TCAS Traffic Advisory followed by multiple consecutive Resolution Advisories (RAs). The Captain assumed PF duties and manually flew the required climbing maneuver using PFD guidance, while the FO notified ATC. Oxygen mask above R4C jump seat came out."
The aircraft continued service about 2 hours after landing.
Qatar's QAAI rated the occurrence a serious incident and opened an investigation reporting: "During a controlled descent to FL210 at 300 KIAS (-1,000 fpm) within the OBBB FIR, the Airbus A320-231 experienced a TCAS Traffic Advisory followed by multiple consecutive Resolution Advisories (RAs). The Captain assumed PF duties and manually flew the required climbing maneuver using PFD guidance, while the FO notified ATC. Oxygen mask above R4C jump seat came out."
The aircraft continued service about 2 hours after landing.
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