Narrative:

While taxiing out for takeoff at clt on taxiway 'M,' missed turn on taxiway 'C.' crew inadvertently crossed runway 18L without clearance. Low visibility and crew unfamiliarity with clt were contributing factors notified ground control of location, and taxied back to runway 18L. Remainder of taxi was normal. There wasn't any conflict with other aircraft. Limited tower visibility may have contributed.

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Original NASA ASRS Text

Title: UNAUTH RWY ENTRY XING.

Narrative: WHILE TAXIING OUT FOR TKOF AT CLT ON TXWY 'M,' MISSED TURN ON TXWY 'C.' CREW INADVERTENTLY CROSSED RWY 18L WITHOUT CLRNC. LOW VISIBILITY AND CREW UNFAMILIARITY WITH CLT WERE CONTRIBUTING FACTORS NOTIFIED GND CTL OF LOCATION, AND TAXIED BACK TO RWY 18L. REMAINDER OF TAXI WAS NORMAL. THERE WASN'T ANY CONFLICT WITH OTHER ACFT. LIMITED TWR VISIBILITY MAY HAVE CONTRIBUTED.

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.