As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 2 ENGINE SURGED AFTER TAKE OFF. TORQUE WENT 70-140 PERCENT. NR 2 ENGINE SURGING FROM 70 TO 140 BACK AND FORTH RIGHT AFTER GEAR UP, BELOW 500FT. FOLLOWED CHECK LIST AND SHUT DOWN THE ENGINE. DECLARED AN EMERGENCY AND RETURNED TO FIELD. R & R THE SWITCH 6141-S4. OPS CHECKED SAT. NO DEFECTS NOTED.