Narrative:

On rotation from runway 1 at dca, my seat slid almost all the way aft. The controls were promptly xferred to the captain. The seat was extremely difficult to relatch in place. I think that the seat latch mechanism was broken. After the seat was secured, the captain continued as the PF. I made sure the seat was secured in place using the procedures outlined at the company web site. The seat was checked to make sure that it was secure prior to takeoff.

Google
 

Original NASA ASRS Text

Title: AN ERJ FO'S SEAT SLID BACK ON TKOF WHILE ACTING AS THE PF.

Narrative: ON ROTATION FROM RWY 1 AT DCA, MY SEAT SLID ALMOST ALL THE WAY AFT. THE CTLS WERE PROMPTLY XFERRED TO THE CAPT. THE SEAT WAS EXTREMELY DIFFICULT TO RELATCH IN PLACE. I THINK THAT THE SEAT LATCH MECHANISM WAS BROKEN. AFTER THE SEAT WAS SECURED, THE CAPT CONTINUED AS THE PF. I MADE SURE THE SEAT WAS SECURED IN PLACE USING THE PROCS OUTLINED AT THE COMPANY WEB SITE. THE SEAT WAS CHKED TO MAKE SURE THAT IT WAS SECURE PRIOR TO TKOF.

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.