Single Engine Operations

Single engine operations Engine Failure Standard Strategy Obstacle Strategy Single engine operations

Single engine operations Standard Strategy In case of engine failure and if no constraining obstacle is found on the route, the AIRBUS ‘Standard strategy’ will be adopted. It ensures MAX range at the expense of rate of descent and descent ceiling Single engine operations

Single engine operations

In case of engine failure the progress page of FMS presents the LRC ceiling as the REC MAX altitude FL165 Single engine operations

Single engine operations FL 166 Single engine operations

Single engine operations

Single engine operations Ex: Descent from FL330 to FL160 MCT Thrust GW 68 t Result: Fuel 1347-433=914 Kg Time 38-12=26 min Dist 253-72=181 Nm Single engine operations

Single engine operations

Single engine operations

Single engine operations Obstacle Strategy If constraining obstacles are met on the route after an engine failure, the ‘AIRBUS Obstacle strategy’ (Drift down) will be adopted in order to maintain the highest possible level. It ensures min rate of descent and max E/O descent ceiling at the expense of range. Single engine operations

Single engine operations

Single engine operations 359 66.5 234 21.7 22000 Single engine operations

Single engine operations 359 66.5 234 21.7 22000 Single engine operations

Single engine operations

Single engine operations Example Determination of LRC ceiling Determination of Drift Down Ceiling Conclusion Single engine operations

Single engine operations Example DATA SAT: -36ºC GW 68 000 kg FL 330 MORA : 18 300 ft Single engine operations

Single engine operations DATA SAT: -36 GW 68 000 kg FL 330 MORA 18300 ft DISA=+15 LRC Ceiling 16600 ft LRC Ceiling 16600 ft As LRC ceiling is below the MORA, the Standard strategy can not be adopted. Single engine operations

Single engine operations DATA SAT: -36 GW 68 000 kg FL 330 MORA 18300 ft DISA=+15 LRC Ceiling 16600 ft As the Drift Down ceiling (19 800 ft) is above the MORA, the Drift Down Procedure is adopted. 409 75.5 234 25.2 19800 Single engine operations

Single engine operations Procedure Set MCT on the remaining engine Decelerate to green dot speed: 234 kt Then Descend to level off Set, on FCU green dot speed and pull A/THR : OFF Set on FCU Drift Down Ceiling and pull. Single engine operations