Medium Large Transport; Low Wing; 2 Turbojet Eng
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 109
Confusion
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural FAR
Flight Crew Took Evasive Action; Flight Crew Returned To Clearance
Human Factors; Procedure
While climbing out through 4500; the FO called out 'airspeed' and I immediately increased my climb rate and slowed to 250. Apparently; 250 was never entered into the box (L2) and neither one of us caught in on the preflight. The highest I saw was approximately 280 knots.
While programming VNAV climb data at gate prior to departure; FO neglected to place 250 kt. restriction in L2; although he did place CMS in L3. CA did not cross-check VNAV climb data. Climbing out of SFO on TRUKN2 RNAV departure; the FMC reverted to ECON mode out of 3020 feet; commanding a climb speed of ~310 knots. The CA; hand-flying; followed the flight director. The FO noticed an airspeed of about 280kts indicated around 4500 feet only after noting a lower-than-normal rate of climb. The CA reduced power and pitched for 250kts; putting the aircraft back on-profile.
First Officer failed to enter the 250 kt speed restriction during preflight. During climbout at 3010 feet the aircraft accelerated to 280 kts. The error was detected at 4500 feet and the aircraft slowed.