B737 flight crew reported encountering severe turbulence while climbing on departure that caused a temporary loss of control resulting in a climb above the SID crossing restriction.
Synopsis
B737 flight crew reported encountering severe turbulence while climbing on departure that caused a temporary loss of control resulting in a climb above the SID crossing restriction.
Narrative
During takeoff out of ZZZ while on the ZZZZZ.5 RNAV Departure; Flight XXXX experienced moderate to severe turbulence between 3000 ft. to 9000 ft. Flight XXXX had just passed point ZZZZZ1 on the departure and was cleared by ATC to continue on the SID except to climb and maintain 14;000 ft. During turn to next point ZZZ1 (8000 ft. and below) and at approximately 7000 ft. aircraft became momentarily unstable; rolling 45 degrees (audible Bank angle call); airspeed increased 20 kts.; climbed 1700 ft. to 8700 ft. and nose of aircraft pitched to 15 degrees. Pilot flying leveled wings and began lowering nose to gain control and come back down to 8000 ft. (ZZZ1 crossing restriction). Pilot monitoring (PM) noticed the light for the 'OFF SCHEDULE DESCENT' had also illuminated as pilot flying attempted to control speed and rate of descent. Severe Turbulence and aircraft control issues continued until passing 9000 ft. Once aircraft had cleared and stabilized on the climb out; PM reported Severe Turbulence to ATC; conducted the ORH procedure for 'Off Scheduled Descent' Checklist and checked with Crew in back to make sure all Flight Attendants and Passengers were okay. The 'A' Flight Attendant informed PM (Captain) that everyone (Crew and Passengers) was okay with no injuries reported. Some Passengers were visibly shaken and voiced their concerns to the Flight Attendants who professionally assured them the aircraft was safe and stable. Captain also made a PA to the Passengers and apologized for the rough ride. Flight continued to ZZZ2 and landed safely without any further issues.
Second reporter narrative
While operating Flight XXXX and departing ZZZ on the ZZZZZ.5 RNAV SID between ZZZZZ1 and ZZZ1; encountered moderate; occasional severe turbulence; and wind shear. The atmospheric conditions caused erratic airspeed and attitude variation during the climb; causing the aircraft to climb to approximately 8700 ft. Corrective action was taken to bring the aircraft under control and correct the altitude to 8000 ft. prior to crossing ZZZ1.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.