Failed APU and airport doesn't have a GPU or ground air cart.
One engine can be kept running for ground operations.
Passenger loading would require the right engine. Cargo, the right for the top deck, left for the lower cargo compartments. Fueling would be another issue.
It's been done.
On the DC-10 and MD-11, the #2 can be kept running without interference to cargo, passenger, or fueling.
Mark, maybe I don't make my meaning clear....I mean to say how is it possible that number of flights is higher than number of starts? I can not understand how it is related to failed APU and unavailable ground support equipment, GSE?!