Single Engine Operations

Single Engine Operations Single engine operations

Engine Failure • Standard Strategy • Obstacle Strategy 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

FL 166 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

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

359 66.5 234 21.7 22000 Single engine operations

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

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

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

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

Single Engine Operations