<< >> NASA ASRS Report 1641875, May 2019

B737 ng first officer reported climbing above an altitude restriction departing lax when they were distracted by wake turbulence from the preceding B777.

Attributes
ACN	1641875
Time
Date	201905
Local Time Of Day	1801-2400
Place
Locale Reference	LAX.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Next Generation Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID SUMMR ONE
Flight Plan	IFR
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 196 Flight Crew Type 4618
Events
Anomaly	Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter Wake Vortex Encounter

Narrative:

Lost situational awareness in relation to altitude at darrk as attention was focused on staying above wake turbulence from a heavy B777 just in front and above on same departure routing. Continually in and out of what felt like the wake turbulence from the B777 throughout the departure. A couple of miles from darrk I noticed we were climbing through 13;500 feet and altitude requirement at darkk was at or below 12;000 feet. I verbalized the potential altitude deviation to the captain; he attempted to correct the situation by stopping the climb and starting a shallow descent. I quickly called ATC (socal departure) and confessed that we would not be at or below 12;000 at darrk; immediately we were cleared to climb and maintain FL230 prior to crossing darrk.

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Original NASA ASRS Text

Title: B737 NG First Officer reported climbing above an altitude restriction departing LAX when they were distracted by wake turbulence from the preceding B777.

Narrative: Lost situational awareness in relation to altitude at DARRK as attention was focused on staying above wake turbulence from a heavy B777 just in front and above on same departure routing. Continually in and out of what felt like the wake turbulence from the B777 throughout the departure. A couple of miles from DARRK I noticed we were climbing through 13;500 feet and altitude requirement at DARKK was at or below 12;000 feet. I verbalized the potential altitude deviation to the Captain; he attempted to correct the situation by stopping the climb and starting a shallow descent. I quickly called ATC (SoCal departure) and confessed that we would NOT be at or below 12;000 at DARRK; immediately we were cleared to climb and maintain FL230 prior to crossing DARRK.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.