B737-700
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 75; Flight Crew Type 20000
Distraction; Situational Awareness
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Environment - Non Weather Related; Human Factors; Procedure
Departing LAS on BOACH 8 from 26R. Climbing out on SID; and maintaining visual separation from preceding aircraft; I was hand flying and deviating upwind of wake. I overshot the 4800 ft. - 7000 ft. restriction prior to ROPPR and was advised of the overshoot by the First Officer several miles prior to ROPPR. Altitude was corrected prior to ROPPR. We were still with Tower at that point. The altitude window was set for FL190 as we were still on a climb via departure. So no audible altitude warning.I could have used CWS (Control Wheel Steering) to avoid the preceding aircraft wake while retaining VNAV for autopilot altitude control.
We were climbing out on the BOACH 8 Departure with the preceding aircraft in sight. Throughout the rotation and climbout; we were picking up the wake turbulence of the aircraft in front of us. The Captain was hand flying and elected to climb faster than normal to stay above their wake. As we were approaching ROPPR I was looking outside at the aircraft in front of us; and missed that we were quickly approaching the altitude restriction at ROPPR. Passing 6800 ft. MSL with a more than 3500 fpm climb; I called the altitude restriction at ROPPR. The Captain leveled the aircraft at 7400 ft. MSL and descended back to the 7000 ft. MSL altitude restriction.The departure and altitude restriction was thoroughly briefed prior to the flight. Other than maintaining my situational awareness; I believe that if we are hand flying and in VNAV we should still set the first hold-down restriction. Once the autopilot is turned on then we can set the top altitude of the climb via. I have been conditioned to listen for the 1000 ft. to go chime. However; I did notice the flight director cueing a level off and the autothrottles reducing the thrust; but by the time my brain registered why this was happening it was not quick enough to arrest the climb rate.
B737 flight crew reported overshooting an altitude restriction climbing out of LAS. A wake vortex encounter reportedly caused some distraction.