Medium Transport
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Flight Instructor
Flight Crew Last 90 Days 9.7; Flight Crew Total 12900; Flight Crew Type 1124
Situational Awareness; Training / Qualification
Deviation - Speed All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Environment - Non Weather Related; Human Factors
Descending into ZZZ; I was keeping my speed below 250 knots while descending through 10;000 feet using speedbrakes (power at idle). As I was reaching my level off altitude in the descent; I retracted the speedbrakes and the aircraft speed increased to around 258 knots. Upon seeing this excess speed; I re-extended the speedbrakes and slowed the aircraft to below 250 knots. Cause - Not noticing the increasing airspeed was a rusty move on my part; I believe; due to lack of flying over the past few months. To prevent this from occurring again; I'll be more focused on the task at hand when changing configurations.
Corporate Jet Captain reported exceeding the 250 knot speed restriction below 10;000 feet and cited lack of flying as a contributing factor.