B737-700 flight crew reported climbing through an altitude restriction after encountering wake turbulence from the preceding aircraft.
Synopsis
B737-700 flight crew reported climbing through an altitude restriction after encountering wake turbulence from the preceding aircraft.
Narrative
Pushed back from gate having briefed the ZZZZZ Departure for [Runway] XXR. After engine starts; new ATIS changed runways to XYR. Re-briefed the departure; changed the performance data values and ran the Departure Plan Checklist. We had an immediate take off after company and we flew through their wake turbulence at several points on the climb out until passing ZZZZZ. The FO and I commented on this while leveling off at the 8;000 ft hold-down. After ZZZZZ we took out the climb reduction and continued to climb. I continued to hand fly the departure and approaching ZZZZZ the autothrottles pulled the power back just like designed for the hold-down at 11;000 ft. In my mind; I thought the hold-down was 13;000 ft (ZZZZZ from [Runway] XXL Departure as initially briefed) and was confused when the power was reduced. I queried the FO and stated I'm not sure why the power is coming back now and continued to climb. Departure Control asked if we were going to level off at 11;000 ft and I immediately corrected back to 11;000 ft now completely understanding the error. Nothing more was said by Departure Control concerning the deviation and we continued to ZZZ1 uneventfully.Engaging the automation earlier certainly would have prevented the deviation as it worked as designed. Our close separation with company on the departure caused us to fly through wake turbulence and took some of our focus. Also running the Climb Checklist so close to a hold-down altitude slowed my recognition of what the automation was showing me.
Second reporter narrative
Day 0; I was the First Officer on company flight ZZZ to ZZZ1. Captain was flying this leg; and I was Pilot Monitoring. We had taken off from Runway XYR out of ZZZ. We were cleared to climb via the ZZZZZ RNAV Departure (FL190). As part of our pre-take off procedures; Captain briefed the entire departure. Captain was hand flying the aircraft during the climbout. As we approached waypoint ZZZZZ at an altitude of about 11;000 ft; Captain remarked about the autothrottles not advancing forward to maintain the selected climb airspeed. I immediately focused on the Flight Mode Annunciator trying to figure out why the autothrottles started to reduce thrust. Almost at the same at the time; ATC asked us if we were going to level off at 11;000 ft. That's when Captain and I realized that waypoint ZZZZZ has an altitude crossing restriction at or below 11;000 ft. By that time; I noticed that we had climbed to an altitude of 11;500 ft. Captain immediately descended 11;000 ft and we crossed ZZZZZ at 11;000 ft. After passing ZZZZZ; we resumed the climb via the SID without further incidents.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.