As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTING IAD THE CREW ADVISED DISPATCH THEY WERE RETURNING TO IAD WITH AN ENGINE ISSUE. NO OTHER INFORMATION AVAILABLE AT THIS TIME. LOSS OF POWER UP TO 3% ON TAKE OFF ROLL AND INITIAL CLIMB- AT 10K POWER LOS(N1) EXCEEDED 10% RIGHT ENGINE. AIRCRAFT REMOVED FROM SERVICE R/R R/H ENGINE AMP CONTROL. PER AMM 73-21-03 ACCEL/ DECEELL, APR AND N1 SPEED CONTROL.AMP DISABLE CHECK. ALL OPS CHECK GOOD. NO DEFECTS NOTED.