1999-07 · NASA ASRS report 444359
AN ACR FLC FLYING A B737 FROM SFO FAILED TO RAISE THE FLAPS PER THEIR COMPANY SOP AND ACFT FLT MANUAL RESULTING IN A FLAP OVERSPD.
DURING DEP AT APPROX 800 FT AGL; SFO BAY DEP CTL CALLED AN EARLY TURN FOR TFC. THIS MOMENTARY DISTR MADE ME FORGET TO CALL FOR 'FLAPS UP; VNAV' AS IS SOP. MY FO ALSO FORGOT TO BACK ME UP DURING THIS MOMENT OF THE DEP PHASE. AT 3000 FT MSL; I CALLED FOR THE AFTER TKOF CHK; AS IS REQUIRED. THE FO RAN THE CHKLIST; BUT DURING THE 'FLAPS AND SLATS UP' CHALLENGE; HE DIDN'T REALIZE FLAPS WERE STILL AT THE TKOF POS. AFTER ACCELERATING AT 10000 FT MSL; I FELT THE BUFFETING; WHICH WAS SIMILAR TO LIGHT CHOP; AND CHKED THE FLAP GAUGE. AIRSPD AT THIS POINT WAS 270 KIAS; A 40 KT FLAP OVERSPD. AFTER SLOWING TO 225 KIAS; I CALLED FOR FLAPS UP; AND THEN PROCEEDED TO CALL COMPANY MAINT FOR FURTHER GUIDANCE. IN RETROSPECT; IT'S VERY HARD TO BELIEVE I ALLOWED THIS MAJOR OVERSIGHT. I CANNOT THINK OF A GREAT REMINDER TO PREVENT ITS OCCURRENCE IN THE FUTURE; OTHER THAN USING 800 FT RADAR ALT; AS I ALWAYS HAVE IN THE PAST. I SIMPLY HOPE THIS IS A ONE-TIME OCCURRENCE THAT WILL NEVER HAPPEN AGAIN. I ALSO DISCUSSED WITH MY FO MY TECHNIQUE IN RUNNING THE AFTER TKOF CHKLIST WHICH IS TO CHK THE GAUGE (FLAPS) AND THEN LOOK UP TO CHK THE LEADING EDGE DEVICES ANNUNCIATOR PANEL (A SERIES OF GREEN AND YELLOW LIGHTS AND SLATS). HE WAS QUITE CONFIDENT HE CHKED THE GAUGE; BUT FEELS HE MUST HAVE 'LOOKED RIGHT THROUGH IT.' I TOLD HIM THAT INCORPORATING THE LED ANNUNCIATOR PANEL IS MY PERSONAL BACKUP THAT THE FLAPS ARE INDEED UP. THIS HAS TO BE A PNF DUTY; DUE TO THE POS OF THE ANNUNCIATOR PANEL.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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