B737-800 flight crew reported an inflight upset occurred after encountering wake turbulence departing MIA in trail of a B767.

Date: 2023-03 · Aircraft: B737-800 · Phase: climb

Anomalies: inflight-event-encounter-loss-of-aircraft-control|inflight-event-encounter-wake-vortex-encounter

Synopsis

B737-800 flight crew reported an inflight upset occurred after encountering wake turbulence departing MIA in trail of a B767.

Narrative

While climbing through 12;000 ft.; we were presented with a sudden occurrence of turbulence and a rapid wing drop. PF (Pilot Flying) quickly put hands on controls; autopilot attempted to correct; but it quickly got worse; and it was evident this was wake turbulence. Right wing dropped further; PM (Pilot Monitoring) announced upset; autopilot was disconnected; and bank was corrected as we got out of the wake. Momentarily received 'bank angle' aural warning as PF fought to correct and counteract wake turbulence. We inquired with ATC and was told we were following a 767 freighter; and we chose to pull back our speed and climb above their path; and ATC gave us direct to a different fix (JAGOR) which slightly offset our route; there was no more wake encountered in the flight.We took off being the 767; and it seemed spacing was adequate by the time we took off; but we clipped their wake; they climbed much faster; both in rate of climb but also in speed; at the time of event they were around 8 mi. ahead; and eventually were nearly 20 miles ahead of us on the SID. It's possible we were given a takeoff clearance with less than prescribed. The 767 was given a heading of 090 on departure; and we were cleared RNAV JAMBA; which is roughly a 30 degree right turn off the runway; so I assumed the 767 was on a different SID/departure path; but that wasn't the case.Maybe more spacing; or being told we were following a heavy. Despite taking off behind the heavy; they were issued a different departure heading; while we were on the SID; so this lead me/us; to believe we wouldn't be following the heavy on the departure except for the initial few hundred ft. off the departure end.

Second reporter narrative

Encountered wake turbulence from a 767 10 miles ahead of us as we were climbing through 12000. Event occurred quickly with autopilot engaged. Aircraft aural warning bank angle sounded as autopilot was disengaged by PF (Pilot Flying) to recover from upset. Continued normal flight ATC should space aircraft further apart.

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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.