Narrative:

I was training on the local position 1 position. Continuous snow removal operations were in effect; weather was IFR with visibility less than 1 mile; braking action advisories were in effect due to the snow. Runway 7L was in use for arrival.aircraft X had landed runway 7L and was instructed to exit at taxiway bravo. Aircraft Y was within 1/2 mile of the approach threshold of runway 7L. I attempted to send the aircraft around because I did not believe aircraft X would be clear of the runway. I was overridden by the on the job training (ojti) at the direction of the supervisor controller in charge (controller in charge) to let aircraft Y continue. Aircraft X did not exit the runway by the time aircraft Y crossed the threshold; the ojti attempted to send aircraft Y around after the aircraft had already touched down. After that transmission; aircraft X broadcast that he was stuck and still on the runway.a few minutes earlier I sent a second arrival around due to too close separation in trail on final and preceding aircraft not being able to exit due to runway contamination. Brief facility personnel on definition of 'clear of the runway' as defined in the pilot/controller glossary. Facility front-line management should not emphasize efficiency over safety. Traffic management initiatives should be implemented in an automatic fashion when IFR conditions/runway contamination exists to prevent too close separation on final.

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Original NASA ASRS Text

Title: A Tower Controller receiving training described an incident at PANC during snow that required a B747 to go-around twice due to loss of spacing. On the third approach the crew is told to go-around again after they have touched down due to a preceding B747 being unable to completely clear the runway. The Captain elected not to go-around again and the crew was able to stop well before the stuck B747.

Narrative: I was training on the Local Position 1 position. Continuous snow removal operations were in effect; weather was IFR with visibility less than 1 mile; braking action advisories were in effect due to the snow. Runway 7L was in use for arrival.Aircraft X had landed runway 7L and was instructed to exit at taxiway bravo. Aircraft Y was within 1/2 mile of the approach threshold of runway 7L. I attempted to send the aircraft around because I did not believe Aircraft X would be clear of the runway. I was overridden by the On the Job Training (OJTI) at the direction of the Supervisor Controller in Charge (CIC) to let Aircraft Y continue. Aircraft X did not exit the runway by the time Aircraft Y crossed the threshold; the OJTI attempted to send aircraft Y around after the aircraft had already touched down. After that transmission; Aircraft X broadcast that he was stuck and still on the runway.A few minutes earlier I sent a second arrival around due to too close separation in trail on final and preceding aircraft not being able to exit due to runway contamination. Brief facility personnel on definition of 'clear of the runway' as defined in the pilot/controller glossary. Facility front-line management should not emphasize efficiency over safety. Traffic management initiatives should be implemented in an automatic fashion when IFR conditions/runway contamination exists to prevent too close separation on final.

Data retrieved from NASA's ASRS site 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.