EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Distraction; Confusion; Time Pressure
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew FLC Overrode Automation
Human Factors; Procedure
During our pre departure duties our weight and balance performance indicated that a flaps 4 takeoff was required. I briefed the flaps four takeoff with the First Officer (FO) and input into the FMS that we would be performing a flaps 4 takeoff. After the pushback and engine start procedures I watched the first officer select the flaps to four. We ran an after start checklist as per SOP the First Officer reading from the checklist stated 'flaps verify four' I pointed at the FO's MCDU display where it said flaps four and then at the flap indication on the EICAS verifying that the flaps were set at four. We finished the after start checklist and taxied to Runway 01 and ran the taxi checklist. Tower cleared us for takeoff; and I called for the before takeoff [checklist]. There was an airplane on final for Runway 01 the takeoff configuration check issued a warning of no takeoff flaps; I again verified flaps were set at four on the EICAS a green 4 was displayed and the flap handle was securely set at 4. I was sure the airplane was properly configured for takeoff as we had previously briefed the flaps four takeoff and reviewed performance numbers from the ACARS. At that point I knew that I had made an error selecting flaps 4 in the FMS for the takeoff configuration warning. Due to feeling pressured with the airplane on final and being sure that we were in fact configured properly I instructed the FO to continue the takeoff.The FMS error was caused by my incorrectly selecting flaps 4 in the weight and balance takeoff conditions page 2 of 2; when I should have selected flaps 4 in the Perf Takeoff page 2 of 2. Looking back on event I realized that I should have not let myself be pressured to continue the takeoff even though I was sure the airplane was configured properly. A rejected takeoff should have been performed.
[Report narrative contained no additional information.]
The ERJ170 crew received a takeoff configuration warning because of an incorrect entry into the FMS. The captain decided to continue the takeoff as he determined that the aircraft was properly configured and there was another aircraft on short final.