Engine Failure After V1: Managing the Critical Transition from Ground to Flight

When your A320/A321 experiences an engine failure after V1, you're committed to takeoff regardless of what happens next. This scenario tests every aspect of your aircraft handling skills and system knowledge because you must simultaneously manage an asymmetric thrust condition, follow complex procedures, and maintain safe flight parameters while transitioning from ground operations to flight. Understanding how to handle this emergency isn't just about following steps; it's about knowing why each action matters and how the aircraft's systems work together to keep you safe.

The Critical First Moments: Maintaining Control on the Ground

The moment an engine fails after V1, your primary focus must be on maintaining the runway centerline using conventional rudder inputs. The aircraft will want to yaw toward the failed engine due to thrust asymmetry, but resist the urge to make aggressive corrections. Your rudder inputs should be smooth and deliberate—the lateral normal law will help you once airborne, but right now you're relying on basic aerodynamics and your piloting skills.

At VR, execute a precise rotation at approximately 3 °/s, targeting an initial pitch attitude of 12.5 °. This specific pitch attitude isn't arbitrary—it’s calculated to ensure the aircraft lifts off safely even with reduced thrust and potentially high FLEX temperatures. Be careful with your rotation technique because high FLEX temperatures combined with low VR speeds create a narrow margin for error. Too aggressive and you risk a tail strike; too gentle and you may not achieve adequate climb performance.

Airborne: Following SRS Guidance and Managing Asymmetric Thrust

Once safely airborne, your flying technique must adapt to the new reality of single-engine operations. The Speed Reference System (SRS) becomes your primary guidance, but understand what it's doing: SRS targets the speed at which the failure occurred, limited between V2 and V2 + 15 kt. This speed management is crucial because it represents the optimal balance between climb performance and controllability with one engine inoperative.

Watch for the blue beta target that replaces the usual sideslip indicator on your Primary Flight Display (PFD). This is your new reference for coordinated flight. While lateral normal law automatically provides some rudder deflection to counter thrust asymmetry, it doesn't fully control the rudder—you must still adjust rudder pedals to center this beta target for optimal climb performance. Think of the normal law as an assistant that helps reduce your workload, but you remain the primary controller of aircraft coordination.

Managing Bank Angle and Rudder Control

If full rudder application doesn't center the beta target, increase airspeed rather than fighting the controls. This is a critical concept: speed is your friend in asymmetric flight because higher speeds provide more rudder authority. Apply rudder trim to reduce pedal pressure while keeping the beta target centered—this reduces your workload and prevents fatigue during what may be a lengthy emergency.

Once properly trimmed, engage the autopilot. However, remember that when autopilot is active, manual rudder trim is disabled, and you must release rudder pedal pressure to prevent autopilot disengagement. This system logic prevents conflicting inputs between you and the automation.

Climb Performance and TOGA Considerations

Monitor your climb and acceleration performance closely. If performance is below expectations, ensure the landing gear is retracted—the additional drag can significantly impact single-engine climb capability. Consider using TOGA thrust for extra performance, but understand the trade-offs: TOGA provides a quick thrust boost but increases yaw and pitch rates, raising your workload when you're already managing a complex situation.

Critical Warning: Never select TOGA at speeds below F speed during a derated takeoff—this can result in loss of control. In CONF 1+F, the F speed appears on the PERF TAKEOFF page, not on your PFD, so you must be aware of this limitation before it becomes critical.

Engine Securing and Procedure Management

Focus on maintaining and monitoring the aircraft's trajectory while your Pilot Monitoring (PM) handles ECAM procedures. Delay acceleration only long enough to secure the engine according to ECAM guidance. The securing process varies based on the type of failure: "ENG MASTER OFF" for engine failure without damage, "AGENT 1 DISCH" for engine failure with damage, or complete fire suppression for engine fires. Your PM will announce "Engine Secured" when these critical steps are completed.

The Acceleration Segment: Transitioning to Normal Flight

At the engine-out acceleration altitude, push the V/S knob to level off and increase speed. As airspeed increases, you'll notice that the rudder input required to center the beta target reduces because higher speeds provide more natural stability. The beta target returns to normal sideslip indication when you retract flaps to 0, signaling the transition back toward normal flight characteristics.

If you're delaying acceleration for any reason, avoid exceeding the engine-out maximum acceleration altitude. This altitude is carefully calculated to balance obstacle clearance with engine thrust limits, and exceeding it may compromise your safety margins.

Final Takeoff Segment and Thrust Management

When the speed trend arrow reaches Green Dot speed, pull the ALT knob to activate OP CLB. Move thrust levers to MCT when the LVR MCT message flashes on the FMA—this indicates the speed index has reached Green Dot and the aircraft is ready for maximum continuous thrust operations.

If your thrust levers are already in the FLX/MCT detent, move them to CL and back to MCT to ensure proper configuration. This action confirms the thrust setting and prevents any confusion about power management.

Operational Considerations and Flight Path Management

Remember that noise abatement procedures are no longer required after an engine failure—focus entirely on safe climb and obstacle clearance. The acceleration altitude is specifically designed to balance these competing requirements. At this point, configure the aircraft to Flap 0 and maintain Green Dot speed for the best climb gradient.

Once established on the final takeoff flight path, continue ECAM procedures until the STATUS page displays, then perform the acceleration flow pattern. If no engine damage is detected, consider an engine relight attempt. Always adhere to your departure briefing, which may include Engine-Out Standard Instrument Departures (EOSIDs), standard SIDs, or radar vectors tailored to your specific situation.

Understanding the Bigger Picture

Engine failure after V1 represents one of the most challenging scenarios in commercial aviation because it combines high workload with critical decision-making at a vulnerable phase of flight. Success depends on understanding that each procedure exists for a specific reason: the 12.5 ° pitch attitude ensures safe liftoff, the beta target optimizes climb performance, and the acceleration altitude balances multiple safety factors.

Your A320/A321 systems are designed to help you manage this emergency, but they require your understanding and proper inputs to work effectively. The lateral normal law assists with rudder control but doesn't replace your judgment. The SRS provides speed guidance but requires your interpretation of climb performance. The ECAM guides engine securing, but it depends on your prioritization of flying the aircraft first.

By understanding these relationships between procedures, systems, and aircraft performance, you can transform a complex emergency into a manageable situation in which each action builds upon the previous one, ultimately leading to a safe outcome.

How to handle A320 engine failure after V1 – rotation technique, SRS guidance, beta target control, and the full sequence from liftoff to engine securing."