Narrative:

During climb; after being handed off from departure control to center; the controller asked if we had been given normal airspeed from the last controller. I responded that we had not been given a speed restriction. The controller stated that per the O'hare four departure there is a 250 knot speed restriction noted in a box on the published chart. He was correct and some contributing factors to our oversight of this note are as follows: the filed route of flight and original ATC clearance was not speed restricted; a full route clearance was issued after the original clearance that included the speed restriction (on the chart; not stated in the clearance itself); the amended clearance was issued while we were taxing; which was on a short taxiway and then a back taxi on an active runway to hold in position; the workload during taxi was high due to a short taxi distance; performance of checklist and takeoff briefing as well as increased vigilance of traffic while on the active runway; and; the transition to electronic charts on new efb's (full page charts (8 1/2 by 11) when displayed full screen are too small to read and when zoomed in to a scale that is readable; become harder to navigate and overall chart orientation is diminished). In my opinion; not taking the time during the busy taxi maneuver to fully review the SID after the amended clearance and the efb display limitation of the chart were the keys that lead to our missing the published speed restriction.

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Original NASA ASRS Text

Title: A corporate jet flight crew reported deviating from the 250 KT speed restriction on the O'Hare 4 SID; in part because of EFB and time limitations.

Narrative: During climb; after being handed off from Departure Control to Center; the Controller asked if we had been given normal airspeed from the last Controller. I responded that we had not been given a speed restriction. The Controller stated that per the O'Hare Four Departure there is a 250 knot speed restriction noted in a box on the published chart. He was correct and some contributing factors to our oversight of this note are as follows: the filed route of flight and original ATC clearance was not speed restricted; a full route clearance was issued after the original clearance that included the speed restriction (on the chart; not stated in the clearance itself); the amended clearance was issued while we were taxing; which was on a short taxiway and then a back taxi on an active runway to hold in position; the workload during taxi was high due to a short taxi distance; performance of checklist and takeoff briefing as well as increased vigilance of traffic while on the active runway; and; the transition to electronic charts on new EFB's (full page charts (8 1/2 by 11) when displayed full screen are too small to read and when zoomed in to a scale that is readable; become harder to navigate and overall chart orientation is diminished). In my opinion; not taking the time during the busy taxi maneuver to fully review the SID after the amended clearance and the EFB display limitation of the chart were the keys that lead to our missing the published speed restriction.

Data retrieved from NASA's ASRS site as of April 2012 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.