As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF FROM ANC LT ENGINE RPM ROLLED BACK TO 98.5 PERCENT. CREW VERIFIED SPEED LEVER WAS FULL FORWARD. TAKEOFF WAS ABORTED AND AIRRCRAFT RETURNED TO BLOCK. CREW PERFORMED GROUND MAX POWER RUNUP WITH NO FAULT FOUND AND CALLED MAINTENANCE. MX INSPECTED ENGINE RIGGING AND PERFORMED RUNUP WITH NO FAULT FOUND. AIRCRAFT WAS RELEASED WITH NO FURTHER PROBLEMS.