Narrative:

We were taxiing single engine to runway 9L in mia. At that time we were already on tower frequency, the controller told us to hold short of runway 9L at intersection M1, but we were supposed to give way to a B757 that was on our left, the B757 went by and tower instructed a B727 to get into position and hold for the full length. At that time we were approaching our holding short line, and we were still on a single engine confign. Without any kind of indication, the tower cleared us for takeoff from intersection M1. At that time my captain, trying to start the N1 engine at the same time we were taxiing into position for takeoff, everything was a little bit rushed for that takeoff. There were a couple of factors for this situation to happen: 1) there was at least 4 airplanes on line for departure in front of us, so I never thought we were going right away. 2) the fact that when the B727 got into position and hold, tower never mentioned to him that there was going to be a DH8 taking off from intersection N1, which normally will help us to determine that we were going next. 3) since he made us wait for the B757 to go by, I thought that would give us extra couple of mins to start the engine. What I learned was that we should never get in a situation that rushes your takeoff, you should take your time even if that means to spend a couple of more mins on line, and refuse to tower for the takeoff until we are completely ready.

Google
 

Original NASA ASRS Text

Title: DH8 CAPT ACCEPTED TKOF CLRNC BEFORE HAVING ALL ENGS STARTED OR CHKLISTS ACCOMPLISHED.

Narrative: WE WERE TAXIING SINGLE ENG TO RWY 9L IN MIA. AT THAT TIME WE WERE ALREADY ON TWR FREQ, THE CTLR TOLD US TO HOLD SHORT OF RWY 9L AT INTXN M1, BUT WE WERE SUPPOSED TO GIVE WAY TO A B757 THAT WAS ON OUR L, THE B757 WENT BY AND TWR INSTRUCTED A B727 TO GET INTO POS AND HOLD FOR THE FULL LENGTH. AT THAT TIME WE WERE APCHING OUR HOLDING SHORT LINE, AND WE WERE STILL ON A SINGLE ENG CONFIGN. WITHOUT ANY KIND OF INDICATION, THE TWR CLRED US FOR TKOF FROM INTXN M1. AT THAT TIME MY CAPT, TRYING TO START THE N1 ENG AT THE SAME TIME WE WERE TAXIING INTO POS FOR TKOF, EVERYTHING WAS A LITTLE BIT RUSHED FOR THAT TKOF. THERE WERE A COUPLE OF FACTORS FOR THIS SIT TO HAPPEN: 1) THERE WAS AT LEAST 4 AIRPLANES ON LINE FOR DEP IN FRONT OF US, SO I NEVER THOUGHT WE WERE GOING RIGHT AWAY. 2) THE FACT THAT WHEN THE B727 GOT INTO POS AND HOLD, TWR NEVER MENTIONED TO HIM THAT THERE WAS GOING TO BE A DH8 TAKING OFF FROM INTXN N1, WHICH NORMALLY WILL HELP US TO DETERMINE THAT WE WERE GOING NEXT. 3) SINCE HE MADE US WAIT FOR THE B757 TO GO BY, I THOUGHT THAT WOULD GIVE US EXTRA COUPLE OF MINS TO START THE ENG. WHAT I LEARNED WAS THAT WE SHOULD NEVER GET IN A SIT THAT RUSHES YOUR TKOF, YOU SHOULD TAKE YOUR TIME EVEN IF THAT MEANS TO SPEND A COUPLE OF MORE MINS ON LINE, AND REFUSE TO TWR FOR THE TKOF UNTIL WE ARE COMPLETELY READY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.