Date: 201811
Local time of day: 0601-1200
Location: ZZZ.Airport, US
Flight conditions: VMC
Aircraft: B757 Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Mission: Passenger
Flight phase: Takeoff / Launch
Aircraft component: Wheels/Tires/Brakes
Component problem: Malfunctioning
Reporter organization: Air Carrier
Reporter function: First Officer; Pilot Not Flying
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Second reporter function: Pilot Flying; Captain
Anomaly: Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy
Detector: Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification
Contributing factors: Aircraft; MEL
Primary problem: Aircraft

Narrative: I was the Pilot Monitoring from ZZZ to ZZZ1. During the preflight planning phase; it was noted that the current MEL/CDL item for aircraft was deferred using [a] MEL; which made all autobrake functions; including RTO inoperative. The deferral had been entered to address a write-up that read 'After touch down EICAS message autobrakes and aircraft left centerline to the left'. Our taxi to Runway XXL in ZZZ1 occurred at normal taxi speeds and no malfunctions were felt or noted. Upon being cleared for takeoff; we performed a rolling takeoff with all engine and system indications normal. At approximately 90-100 knots; a momentary brake application was felt; with a similar application felt approaching rotation speed. The application was momentary and controllable with normal flight control inputs. We had two cockpit jumpseaters; in addition to the Captain and myself. All four of us felt the momentary application/slight deceleration and verbally identified it. Once airborne; our climb out; cruise; descent; and approach phase were all normal. During the cruise portion of the flight; the Captain coordinated with Dispatch and Technical Support Maintenance Control; as well as requesting emergency equipment standing by on our arrival into ZZZ. During the approach briefing; we discussed the importance of not floating the landing; as well as using all available resources (spoilers/reversers/brakes) to stop the aircraft in as controlled a manner as possible. We flew a normal ILS XYR in ZZZ; with [priority]. The landing was normal; with the momentary application of the right brake being felt during the rollout. During the landing; although the auto speedbrakes were confirmed armed; they did not automatically deploy. The EICAS indicating the failure was verbalized and the Captain manually deployed the speedbrakes. Upon clearing [Runway] XYR; ATC was coordinated with and advised that no further assistance was required. We taxied normally and shutdown at gate. Upon arrival at the gate; we debriefed with 3 maintenance personnel; input the appropriate ELB reports; and debriefed with two pilots from the [Chief Pilot Office] regarding our assessment of the event. Finally; we completed our post-flight debrief and continued the remaining portion of our [trip].


Second narrative: Aircraft had the Autobrake system deferred due to the aircraft pulling left on landing with an Autobrakes EICAS Message in ZZZ1. The brakes were inspected and the brakes checked good. The Autobrake system was deferred [the next day]. The aircraft flew ZZZ1 - ZZZ with no incident. I did not talk to the inbound Captain. Flight pushed back at ZZZ taxied to [Runway] XXL uneventfully. On takeoff roll; Captain flying; First Officer talking and two jumpseaters; we experienced a drag / pull to the right at 90 KIAS and again at 130 KIAS; both pulls to the right were controllable with the rudder and the take off was continued. Both crewmembers and both observers felt the drag/yaw. The flight continued to ZZZ1. Enroute we coordinated to have equipment standing by on landing due to the uncertainty of the braking system. We [requested priority] with ZZZ Approach. We landed [Runway] XY; flaps 25; ref 135 KIAS touched down; expeditiously lowered the nose and used reverse for deceleration. The brakes were applied at approximately 80-90 KIAS clearing at the high speed P3. The brakes pulled to the right again and the yaw was controlled with rudder. The Auto Speed Brakes were armed and did not deploy with an associated EICAS message after touchdown. After clearing the runway we did not require additional assistance and the [priority situation] was terminated. Maintenance met the aircraft and was briefed on the issue. The aircraft was taken out of service and sent to the hangar.


Synopsis: A Boeing 757 flight crew reported braking problems during takeoff and landing.