EMB ERJ 170/175 ER/LR
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance
Human Factors; Weather
About 200 miles to Top of Descent; [we] requested ATIS for both SEA and PAE by ACARS and radio. A south flow was confirmed for SEA and north landing for PAE. The FMS was then switched from the ILS 16R approach to the RNAV (GPS) RWY 34L into PAE. South flow altitudes and speeds were then verified on the OLYMPIA-2 against the FMS data; which all checked right and were briefed (OLM 270 knots @ 17;000 feet and ARVAD 250 knots at 13;000 feet). Shortly after; we flew through an area of light-moderate turbulence which led us to request a lower altitude; [we were] then cleared via the OLYMPIA-2. 13;000 feet was set in the altitude alerter and a VS of 1500 FPM descent started until intercepting the descent path with PTH indicated. As a result of the prevailing conditions; we crossed OLM below 17;000 feet; then were queried by ATC. We stated our present position; altitude and condition; soon after; ATC cleared us to maintain 13;000 feet then 10;000 feet. We should have informed ATC earlier during the descent that we could not maintain 17;000 feet; instead of waiting for him to query us on it.
EMB-175 Captain reported they overshot a crossing restriction descending into PAE; citing turbulence as a contributing factor.