Narrative:

We were cleared to line up and wait behind a company E175 that was departing 25R in lax. Once company aircraft was on the upwind we were cleared for takeoff. I handed the aircraft over to my first officer who was the pilot flying. We rolled down the runway with no incidents and rotated. Once a positive rate of climb was obtained; he called gear up. At approximately 1000 feet AGL we encountered what I can only describe as a large wake from some aircraft but wouldn't have been from the company in front of us. The aircraft rolled hard to the right and the aircraft began to slow. I observed the airspeed slowing and called this to my first officer. He was able to roll the aircraft back level and lower the nose to let the airspeed begin to gain again. At about the same time we received 3 EICAS messages. They were as follows. Aoa lmt fail; windshear fail; and shaker anticipated. I instructed [the first officer] to fly airplane and we would take care of the msgs once we were in a safe attitude and away from the ground. As the aircraft recovered and started to climb again we cleaned up the flaps and were able to avoid whatever wake there was left. Once the flaps were at 0 I handed the radios over to [the first officer] and I began running the qrhs for each message. As I went through each checklist I found that the only real effect any of these would have on our flight was that we were not able to exceed .5 mach in cruise as part of the shaker anticipated QRH. I quickly changed the speed in the box to the new cruise speed and determined that it would not affect our fuel at all so the decision was made to continue to [destination]. I notified dispatch and maintenance of the condition and decision to continue and they advised us to call on the ground. We landed with flaps full per the QRH without any incident. Upon landing the msgs disappeared and were replaced with ads probe 1 and 4 fail. Once at the gate; I called mx and we coordinated a ground reset and that cleared the message. Maintenance felt that it was just some 'bad air' that had got into the probes and that a reset would fix it. Upon powering the aircraft back up; all msgs were cleared.

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Original NASA ASRS Text

Title: EMB-175 flight crew reported encountering several system anomalies after a wake turbulence event departing LAX.

Narrative: We were cleared to line up and wait behind a company E175 that was departing 25R in LAX. Once company aircraft was on the upwind we were cleared for takeoff. I handed the aircraft over to my FO who was the pilot flying. We rolled down the runway with no incidents and rotated. Once a positive rate of climb was obtained; he called gear up. At approximately 1000 feet AGL we encountered what I can only describe as a large wake from some aircraft but wouldn't have been from the company in front of us. The aircraft rolled hard to the right and the aircraft began to slow. I observed the airspeed slowing and called this to my FO. He was able to roll the aircraft back level and lower the nose to let the airspeed begin to gain again. At about the same time we received 3 EICAS messages. They were as follows. AOA LMT FAIL; WINDSHEAR FAIL; and SHAKER ANTICIPATED. I instructed [the First Officer] to fly airplane and we would take care of the MSGS once we were in a safe attitude and away from the ground. As the aircraft recovered and started to climb again we cleaned up the flaps and were able to avoid whatever wake there was left. Once the flaps were at 0 I handed the radios over to [the First Officer] and I began running the QRHs for each MSG. As I went through each checklist I found that the only real effect any of these would have on our flight was that we were not able to exceed .5 Mach in cruise as part of the SHAKER ANTICIPATED QRH. I quickly changed the speed in the box to the new cruise speed and determined that it would not affect our fuel at all so the decision was made to continue to [destination]. I notified Dispatch and Maintenance of the condition and decision to continue and they advised us to call on the ground. We landed with flaps full per the QRH without any incident. Upon landing the MSGs disappeared and were replaced with ADS Probe 1 and 4 Fail. Once at the gate; I called MX and we coordinated a ground reset and that cleared the MSG. Maintenance felt that it was just some 'bad air' that had got into the probes and that a reset would fix it. Upon powering the aircraft back up; all MSGs were cleared.

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.