Medium Transport; Low Wing; 2 Turbojet Eng
Flight Crew Multiengine; Flight Crew Instrument
Human-Machine Interface
Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Flight Deck / Cabin / Aircraft Event Other / Unknown
Human Factors
In cruise at 320 kts I was working in the FMS with my left hand. My wristwatch caused my sleeve to bunch up and catch on the flap lever. The flap lever moved to the Flaps 1 position.I felt it pull on my wrist and knew immediately what had happened. Within a second or two I returned the lever to Flaps 0. The overspeed clacker had already sounded and I looked at ED1 for a flaps display. I saw that the Flaps/Gear display was not on ED1 and I told the captain it was an inadvertent flap movement but the lever was back at Flaps 0.ED1 never showed a flap movement and there was no pitch change so we concluded that the slats probably didn't have a chance to extend. We continued the flight and contacted maintenance at our destination when we landed. I now wear my wristwatch on my right arm to prevent any chance of this happening again.
CRJ First Officer reported catching his sleeve on the flap lever and moving it to the #1 position. He caught the error right away and moved the handle back to zero before the slats started to move.