Narrative:

Extended taxi in phl, first officer exceeded his maximum duty day. After communications with dispatcher/crew tracking, a qualified deadheading first officer replaced first officer at the aircraft control position. Flight proceeded uneventfully to bos.

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Original NASA ASRS Text

Title: DISCOVERED WHILE TAXIING, FO EXCEEDED MAX DUTY DAY. REPLACED WITH DEADHEADING FO AT THE ACFT CTL POS.

Narrative: EXTENDED TAXI IN PHL, FO EXCEEDED HIS MAX DUTY DAY. AFTER COMS WITH DISPATCHER/CREW TRACKING, A QUALIFIED DEADHEADING FO REPLACED FO AT THE ACFT CTL POS. FLT PROCEEDED UNEVENTFULLY TO BOS.

Data retrieved from NASA's ASRS site as of July 2007 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.