Gulfstream G650
Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 100; Flight Crew Total 8000; Flight Crew Type 1200
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural FAR
Flight Crew Took Evasive Action
Human Factors
We had to descend with around 1;600 ft/min to achieve the ATC request to level of at 25;000 ft. We were late on reducing rate which triggered a TCAS RA for 300ft climbing. We saw the TRFC so no factor.
G650 Captain reported overshooting their level off at 25;000 feet and received a RA for a climbing aircraft.