Regional Jet 700 ER/LR (CRJ700)
Flight Crew Air Transport Pilot (ATP)
Distraction; Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown
General None Reported / Taken
Environment - Non Weather Related; Human Factors; Weather
On taxi out the Captain and I were concerned that the nose wheel might be behaving differently than it had been on taxi out from previous departure. During the course of the discussion we determined that the difference in sound was due to the much colder weather in Airport ZZZ. At that time; tower cleared us for takeoff; which we accepted. We accomplished the takeoff check; took the runway for departure; and climbed out uneventfully. After notifying the flight attendants that we were above 10;000 feet; one of them called to inform us that we had neglected to inform them that we were ready for takeoff; and one of them had to rush back to her seat to get seated on time. We apologized to the flight attendants; then the Captain and I reviewed the events leading up to takeoff and determined that we had forgotten to accomplish the Before Takeoff checklist; resulting in the failure to notify the flight attendants.Threats include the potential for missing an item on the checklist; which happened; and could have resulted in injury to the flight attendants. Slow down and verify following any anomaly after pushback; but before takeoff.
[Report narrative contained no aditional information].
A CRJ-700 flight crew; taxiing for takeoff; were distracted by unusual nose gear sounds they determined to be associated with the cold conditions. When they were then cleared for takeoff in advance of arriving at the departure runway they mentally entered the 'takeoff mental mode' and departed without completing the before takeoff checklist and; thus; had failed to advise the flight attendants of their imminent departure. Upon climbing through 10;000 feet the flight attendants called to notify of their incomplete SOP.