Single Engine Taxiing AND The Fuel Saving???
Hi,
Is the procedure of a single engine taxiing (for a twin) or fewer engines taxiing (in a trijet or quad) used alot in airlines? Is it an approved procedure? Is it used during taxi-in AND taxi-out?
-What are the benefits and disadvantages of this procedure?
-Is the use of the APU in the gate cost-effective than the use the ground equipments like GPU, ground air conditioning cart,...etc?
Feedback very appreciated. Thank you.
Best regards.