On the HHOOD3 arrival into pdx a crew exceeded the 280 knot airspeed restriction.

Attributes
ACN	1290465
Time
Date	201508
Local Time Of Day	1201-1800
Place
Locale Reference	SEA.Airport
State Reference	WA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Airbus Industrie Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR HHOOD3
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Experience	Flight Crew Last 90 Days 171 Flight Crew Total 8185 Flight Crew Type 4619
Events
Anomaly	Deviation - Procedural Clearance Deviation - Speed All Types

Narrative:

We exceeded the 280kt airspeed restriction on the HHOOD3 arrival. We were held up high because of conflicting traffic on the initial descent profile. Our flight was also running late because of earlier flow restrictions. I believe that using the [tablet] caused much of this airspeed exceedance because when you expand the approach chart to aid in the viewing during glare situations it eliminates the tiny airspeed restriction note on the arrival chart. I do believe this would not have happened using paper because the entire chart is always in full view.

Original NASA ASRS Text

Title: On the HHOOD3 arrival into PDX a crew exceeded the 280 knot airspeed restriction.

Narrative: We exceeded the 280kt airspeed restriction on the HHOOD3 arrival. We were held up high because of conflicting traffic on the initial descent profile. Our flight was also running late because of earlier flow restrictions. I believe that using the [tablet] caused much of this airspeed exceedance because when you expand the approach chart to aid in the viewing during glare situations it eliminates the tiny airspeed restriction note on the arrival chart. I do believe this would not have happened using paper because the entire chart is always in full view.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.