TKOF ABORTED BY LTT CREW.

Narrative

WE HAD NO PAX ON BOARD FOR OUR FLT BACK TO DTW. CAPT AND I HAD BEEN FLYING TOGETHER FOR 2 DAYS. AS WE FINISHED THE BEFORE TKOF CHKLIST; HE LET ME (THE FO) TAXI THE AIRPLANE ONTO THE RWY FOR TKOF (EVEN THOUGH THIS WAS MY LEG TO FLY; THIS ISN'T COMPANY POLICY TO LET THE FO TAXI FOR TKOF). AS SUCH; I NEGLECTED TO RECHK OUR FINAL ITEMS BECAUSE I WAS TRYING TO TAXI THE ACFT. THE CAPT; UNFAMILIAR WITH MY DUTIES; PULLED OUT THE CHKLIST TO ENSURE NOTHING WAS MISSED. UNFORTUNATELY; HE NEGLECTED (OR I NEGLECTED; SINCE IT WAS ACTUALLY MY RESPONSIBILITY) TO MAKE SURE THE PROP LEVERS WERE PUSHED ALL THE WAY TO HIGH FOR TKOF. AS I ADDED PWR; THE L ENG BEGAN TO SURGE AND THE 'BLUE BYPASS' LIGHT CAME ON FOR THE L ENG. WE ABORTED THE TKOF. AFTER RUNNING THE ENG UP ON THE TXWY; WE DISCOVERED THE PROB. WE THEN TAXIED OUT FOR DEP WITH AN UNEVENTFUL TKOF AND CLB.. THIS TIME DOING OUR OWN JOBS AS TRAINED BY THE COMPANY. LESSON LEARNED: DON'T SWITCH DUTIES; ESPECIALLY DURING CRITICAL PHASES OF FLT; IT COULD BE DISASTROUS. FORTUNATELY FOR US; NOTHING WAS HURT; EXCEPT OUR PRIDE.