Narrative:

At about XA00 my flight xa was holding short of runway 12L on taxiway C on the south side. I remember stl tower clearing an aircraft on approach to runway 12L to change runways and land on runway 12R. Subsequently, tower cleared flight xa into position and hold on runway 12L. I started taxiing across the hold short line. Almost simultaneously, my first officer looked left, he hit the brakes, tower directed an aircraft to go around, I looked left and stopped my aircraft about 20 ft short of crossing the right runway edge marking. The aircraft on approach reported on a go around and asked tower the reason. Tower replied, 'aircraft on the runway.' about 1 min later, tower cleared flight xa into position on runway 12L, followed by clearance to takeoff. The flight continued without incident. Other than tower's statement regarding the reason for the go around, no other comment or explanation was made in reference to my operation of my aircraft, not to the operation of the aircraft on approach to my knowledge.

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Original NASA ASRS Text

Title: TWR CTLR CHANGED RWY ASSIGNMENT TO LNDG ACFT THAT FAILED TO FLY THE CLRNC.

Narrative: AT ABOUT XA00 MY FLT XA WAS HOLDING SHORT OF RWY 12L ON TXWY C ON THE S SIDE. I REMEMBER STL TWR CLRING AN ACFT ON APCH TO RWY 12L TO CHANGE RWYS AND LAND ON RWY 12R. SUBSEQUENTLY, TWR CLRED FLT XA INTO POS AND HOLD ON RWY 12L. I STARTED TAXIING ACROSS THE HOLD SHORT LINE. ALMOST SIMULTANEOUSLY, MY FO LOOKED L, HE HIT THE BRAKES, TWR DIRECTED AN ACFT TO GO AROUND, I LOOKED L AND STOPPED MY ACFT ABOUT 20 FT SHORT OF XING THE R RWY EDGE MARKING. THE ACFT ON APCH RPTED ON A GAR AND ASKED TWR THE REASON. TWR REPLIED, 'ACFT ON THE RWY.' ABOUT 1 MIN LATER, TWR CLRED FLT XA INTO POS ON RWY 12L, FOLLOWED BY CLRNC TO TKOF. THE FLT CONTINUED WITHOUT INCIDENT. OTHER THAN TWR'S STATEMENT REGARDING THE REASON FOR THE GAR, NO OTHER COMMENT OR EXPLANATION WAS MADE IN REF TO MY OP OF MY ACFT, NOT TO THE OP OF THE ACFT ON APCH TO MY KNOWLEDGE.

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.