As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4411 - ON TAKEOFF, THE CREW RECEIVED AN AUTOCOARSEN WARNING ON LEFT CWP. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE GROUND RAN ENGINE AND COULD NOT DUPLICATE THE PROBLEM. AIRCRAFT RETURNED TO SERVICE. (X)