Narrative:

Holding short of runway 9L at taxiway K5 with phl ground, got new taxi instructions. Thought it was left on taxiway Y, right on taxiway south. While crossing under the short final extended centerline of runway 9L on taxiway Y, I saw and heard aircraft on short final which initiated a go around because of our position. Ground control insisted they said 'Y-J-south,' which I cannot deny and makes more sense, although confusing to trace on the airport diagram.

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Original NASA ASRS Text

Title: CL65 TAXIING FOR DEP AT PHL MISUNDERSTANDS TAXI RTE AND CROSSED RWY PROMPTING A GAR.

Narrative: HOLDING SHORT OF RWY 9L AT TXWY K5 WITH PHL GND, GOT NEW TAXI INSTRUCTIONS. THOUGHT IT WAS L ON TXWY Y, R ON TXWY S. WHILE XING UNDER THE SHORT FINAL EXTENDED CTRLINE OF RWY 9L ON TXWY Y, I SAW AND HEARD ACFT ON SHORT FINAL WHICH INITIATED A GAR BECAUSE OF OUR POS. GND CTL INSISTED THEY SAID 'Y-J-S,' WHICH I CANNOT DENY AND MAKES MORE SENSE, ALTHOUGH CONFUSING TO TRACE ON THE ARPT DIAGRAM.

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.