EMB ERJ 170/175 ER/LR
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Undershoot; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Procedure; Human Factors
While on the CLIPR2 RNAV arrival into DCA we were instructed to maintain 310 kts and cross CLIPR at 12;000 ft. Roughly 20 miles from CLIPR our instructions were amended to cross CLIPR at 280 kts and 12;000 ft. In order to reduce airspeed we had to reduce our rate of descent. The rate of descent was reduced to an angle that allowed the speed to be achieved but kept us high on altitude. We crossed CLIPR at roughly 13;000 ft and were informed by ATC to cross 5 miles north of BAL at 11;000 for traffic clearance which was accomplished. In retrospect; utilization of the speed brakes to increase rate of descent as well as notifying ATC of our inability to accommodate the amended clearance would have been more proactive.
EMB-170 pilot reported not crossing a specified intersection at the correct altitude due to a speed reduction by ATC while on the CLIPR2 RNAV arrival into DCA.