Reducing use of APU

World wide the number of airports that provide electrical power and air conditioning from the aerobridge are still in the distinct minority. Where it is not supplied Ground Handling Agents often provide diesel generators and air conditioning trucks that can be used in lieu of the aircraft APU.

Regretfully despite the true cost of providing electrical power and air conditioning from a ground source being significantly less (financially and in terms of emissions) than providing the same from the aircraft APU, many airport companies and /or Ground Handlers charge fees so high that airlines are forced to retain use of the aircraft APU.

At Auckland, Air New Zealand approached the Airport Company in 2006 promoting a project to install provisions on every aerobridge. That installation was completed in November 2007 and today over 90% of all operators are using this airport supplied power and air conditioning.

The provision of such services from the aerobridge not only reduces emissions but also reduces noise pollution for staff on the ramp and airport neighbours.

Today’s flight will use air conditioning and electrical power supplied from the Auckland Airport aerobridge for the aircraft turnaround. The APU will be started approximately 15 minutes prior to departure to provide compressed air for the start of the aircraft main engines. At a typical electrical and pneumatic load, the Boeing 777 APU will consume 60 US gallons per hour. On a B747 the consumption averages 110 US gallons per hour.

Estimated Fuel saved this flight from reduced use of the APU is 60 US gallons.

 

 

Flight Phase Information