First officer reported a rejected takeoff after multiple compressor stalls on takeoff.

Attributes
ACN	1748730
Time
Date	202007
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During initial takeoff from ZZZ; engine stall occurred on the left engine around 80 kts. Causing a slight deviation of the aircraft to the left; but quickly returned to normal. During assessment of reason for pull (unsure initially of the stall); engine instruments were normal and aircraft was accelerating properly. Approaching 110 kts.; a second event occurred similar to the first stall with a pull to the left. I saw the left engine spool back several percentage of RPM; and at that time; the captain initiated an abort on the runway. Normal abort procedures were applied; the aircraft was brought to a stop; ATC was notified and we proceeded to run the appropriate checklists. After determining the brake temps would allow a taxi back to the gate; we returned to the gate.engine malfunction on left engine.

Original NASA ASRS Text

Title: First Officer reported a rejected takeoff after multiple compressor stalls on takeoff.

Narrative: During initial Takeoff from ZZZ; engine stall occurred on the left engine around 80 kts. causing a slight deviation of the aircraft to the left; but quickly returned to normal. During assessment of reason for pull (unsure initially of the stall); engine instruments were normal and aircraft was accelerating properly. Approaching 110 kts.; a second event occurred similar to the first stall with a pull to the left. I saw the left engine spool back several percentage of RPM; and at that time; the Captain initiated an Abort on the runway. Normal abort procedures were applied; the aircraft was brought to a stop; ATC was notified and we proceeded to run the appropriate checklists. After determining the brake temps would allow a taxi back to the gate; we returned to the gate.Engine malfunction on left engine.

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.