A330
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Communication Breakdown; Troubleshooting
Aircraft Equipment Problem Critical; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft; Human Factors
Number two engine. At 80 kt.; thrust normal. Above 100 kt.; #2 engine slightly low. Selected TOGA. In initial climb; autopilot was not selected on. ATC gave us a turn and autopilot was selected on. Climb thrust matched. Above 10;000 ft.; selected MCT (Maximum Continuous Thrust); thrust did not match. Decision to find suitability. Used Maintenance; [requested priority handling]; etc.; and returned to ZZZ. Number two engine started to produce ECAMs. Followed ECAM; followed by QRH. Dumped fuel and followed overweight landing procedures. Ran descent and in-range checklists. Reviewed single-engine missed approach procedures. Kept engine 2 at idle per QRH. Briefed flight attendants on precautionary landing. Landed without incident.
Upon takeoff roll; the takeoff thrust was set below 80 kt.; above 100 kt.; we noticed the number 2 engine thrust had rolled back slightly; 5%; under the desired flex setting. Captain elected to advance the thrust to TOGA and continue the takeoff. The engine thrust was still slightly low; all other indications were normal; [and] we continued the takeoff. The engine thrust was a serious concern being we weighed 501K lb. That distracted our navigation and we ended up initially missing the first turn on the ZZZ SID. ATC gave us a heading and later advised of a possible pilot deviation." We had not [requested priority handling] at this point.The initial 10 seconds after rotation; much attention was being given to flying the aircraft and analyzing the severity of our engine malfunction. This led to slower-than-normal turn rate on initial SID departure. Eventually; [the] engine failed at any thrust setting other than idle and [priority handing was requested]."
A330 flight crew reported a loss of thrust on the number two engine and elected to return to the departure airport and make an overweight landing.