B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented
Human Factors
The Captain was Pilot Flying for our initial takeoff; and after becoming airborne; called 'Gear Up.' Inexplicably; I raised the flap handle instead of the gear handle. Over the next several seconds; the flaps retracted while I confirmed lateral navigation (LNAV) at 400 feet AGL; selected vertical navigation (VNAV) at 1;000 feet AGL; and responded to the tower's call to change to departure control. During this time; the flaps were retracting; the minimum airspeed indicator ('hook') increased; until the stick shaker activated. When this happened; I looked at the flap indicator; realized my error and extended the flaps to takeoff position (Flaps 5). Simultaneously; the Captain reduced the climb angle; I raised the gear handle; the aircraft accelerated; and the stick shaker stopped. The rest of the departure was normal.I screwed up. Pooched it. No excuses. Have no idea why I reached for the flaps instead of the gear. Have successfully raised the gear--without error--for decades and buckets of hours.   Slow down. Don't rush. Fight complacency. Don't think it can't happen to you. Buying beverages for the rest of the trip will reinforce my lesson-learned.
A B767-300 First Officer reported mistakenly raising the flaps in response to the flying pilot's command to raise the landing gear.