AN EMJ145 DID NOT ROTATE AT THE CALCULATED VR SPD. THE CREW REJECTED. NO CAUSE DISCOVERED BUT BAGGAGE MISLOADING SUSPECTED.

Narrative

MY CREW AND I WERE MAKING A STATIC TKOF FROM RWY 1 AT DCA. THE FO WAS THE PF. EVERYTHING WE COULD SEE IN THE FLT DECK WAS NORMAL. ALL OF OUR CALLOUTS AND PROCS WERE STANDARD AND NORMAL. AFTER COMMENCING THE TKOF ROLL AND REACHING V1 (128 KTS FOR THIS FLT); I MADE THE STANDARD CALLOUT OF 'V1 ROTATE.' THE FO THEN BEGAN TO PULL THE YOKE BACK. SOMEWHERE BTWN 135-140 KTS; THE FO HAD THE YOKE TO THE FULL AFT STOP AND THE ACFT'S NOSE WAS NOT LEAVING THE GND. AT THIS TIME WE ABORTED THE TKOF. WE EXITED THE RWY AT THE INTXN OF RWY 33 AND RWY 1. WE THEN RAN THE APPROPRIATE CHKLISTS; DECIDED TO RETURN TO THE GATE AND DEPLANE THE PAX. AT THAT TIME I WROTE UP THE ACFT. AT NO POINT; EITHER BEFORE OR AFTER THE ATTEMPTED TKOF; DID WE HAVE ANY UNUSUAL INDICATIONS OR ANY ABNORMALITIES. THE ONLY THING THAT WAS NOT NORMAL WAS THE FACT THAT THE ACFT DID NOT ROTATE. I HAVE NO THOUGHT AS TO WHAT THE PROB WAS. ONLY THAT WE WERE LUCKY THAT WE BOTH HAD ENOUGH RWY AND WERE AT A WT THAT AN ABORTED TKOF AFTER V1 WAS POSSIBLE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: CAPT STATED THAT HE HAS NOT HAD A CONCRETE ANSWER TO THE CAUSE OF THIS EVENT. THE FLT RECORDER DATA WAS OVERWRITTEN BEFORE IT COULD BE ANALYZED. A TEST FLT DISCOVERED NO FLT CTL DISCREPANCIES. THE FLT DEPT MGMNT SUSPECTS BAGS WERE MISLOADED OR NOT LOADED AT ALL.