Narrative:

Trying to contact mia ground for taxi clearance it took my first officer several attempts to get a response from ground. The reason was because this lone controller was handling tower functions for all three runways plus ground control plus later on even issuing an IFR route clearance. I expressed my discomfort with such a marginal operation during taxi out to my first officer since this airport is still very busy at this time of the day. Sure enough; soon we got proof of the deficiency of such an operation. We had just started our take off roll when tower issued us a frequency change to departure. The controller later on apologized for the mistake. Let there be no misunderstanding: I am not criticizing the human who is trying to juggle ten balls or better passenger carrying airliners in the air. Not good and safe.

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Original NASA ASRS Text

Title: Air Carrier departure from MIA expressed concern regarding the apparent combined operational positions in the Tower.

Narrative: Trying to contact MIA Ground for taxi clearance it took my First Officer several attempts to get a response from Ground. The reason was because this lone Controller was handling Tower functions for all three runways plus Ground Control plus later on even issuing an IFR route clearance. I expressed my discomfort with such a marginal operation during taxi out to my First Officer since this airport is still very busy at this time of the day. Sure enough; soon we got proof of the deficiency of such an operation. We had just started our take off roll when Tower issued us a frequency change to Departure. The Controller later on apologized for the mistake. Let there be no misunderstanding: I am not criticizing the human who is trying to juggle ten balls or better passenger carrying airliners in the air. Not good and safe.

Data retrieved from NASA's ASRS site as of April 2012 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.