Widebody transport made missed approach due to air carrier taxiing slowly across runway.

Attributes
ACN	111006
Time
Date	198905
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 50 agl bound upper : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 4 Turbojet Eng
Navigation In Use	Other
Flight Phase	landing : missed approach
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	ground other : taxi
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : instrument
Experience	flight time last 90 days : 85 flight time total : 5700
ASRS Report	111006
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground critical non adherence : required legal separation non adherence : published procedure other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

Approximately at XX20Z, den tower cleared us to land on runway 26R. While on short final approach, the tower cleared an air carrier to cross runway 26R. At that time the air carrier started to taxi very slowly. Although it had lots of time to cross the active runway, it hesitated and took a very long time to cross the runway. It was the captain's decision at that point to be prepared for a go around in case it became necessary. During landing phase, the captain decided to go around. Tower advised us to execute a go around at the same time. The first officer executed the go around and we crossed over the air carrier while the last portion of the aircraft was clearing the active runway. It was the crew and the tower controller's belief that the air carrier had plenty of time to clear the runway.

Original NASA ASRS Text

Title: WDB MADE MISSED APCH DUE TO ACR TAXIING SLOWLY ACROSS RWY.

Narrative: APPROX AT XX20Z, DEN TWR CLRED US TO LAND ON RWY 26R. WHILE ON SHORT FINAL APCH, THE TWR CLRED AN ACR TO CROSS RWY 26R. AT THAT TIME THE ACR STARTED TO TAXI VERY SLOWLY. ALTHOUGH IT HAD LOTS OF TIME TO CROSS THE ACTIVE RWY, IT HESITATED AND TOOK A VERY LONG TIME TO CROSS THE RWY. IT WAS THE CAPT'S DECISION AT THAT POINT TO BE PREPARED FOR A GAR IN CASE IT BECAME NECESSARY. DURING LNDG PHASE, THE CAPT DECIDED TO GO AROUND. TWR ADVISED US TO EXECUTE A GAR AT THE SAME TIME. THE F/O EXECUTED THE GAR AND WE CROSSED OVER THE ACR WHILE THE LAST PORTION OF THE ACFT WAS CLRING THE ACTIVE RWY. IT WAS THE CREW AND THE TWR CTLR'S BELIEF THAT THE ACR HAD PLENTY OF TIME TO CLR THE RWY.

Data retrieved from NASA's ASRS site as of August 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.