Messier-Bugatti’s “Green Taxiing” solutions for Smarter Ground Operations

Farnborough, UK, 19 July, 2010

Messier-Bugatti (Safran group), world leader in carbon wheels and brakes and landing systems,
announced today recent developments in its Green Taxiing initiative, which will enable aircraft to
autonomously manoeuver on ground without relying on thrust from the main engines.

Messier-Bugatti launched Green Taxiing in 2008, in response to growing industry requirements to
reduce fuel burn and reduce C02 emissions at every stage of aircraft utilization. To avoid using
engine thrust, Messier-Bugatti is developing several solutions to power the main landing gear, as
these gears support up to 90% of the aircraft weight. Messier-Bugatti is targeting 2016 for
introduction on single aisle aircraft.

Today, two CFM-type engines burn 12kg per minute of fuel during taxiing phases. An average
A320 or 737 aircraft operates up to 14 flight cycles per day, and travels several kilometers on the
ground both before and after takeoff.

In addition to generating a 4-5% reduction in on-ground fuel burn and C02 emissions, the
advantages of such a system are numerous:

  • Complete autonomy in on-ground manoeuvres, replacing the use of a tractor to push back

from the terminal.

  • Less solicitation of the brakes during the taxiing phase, no longer needed to counter

residual thrust from the main engines

  • Noise reduction during on-ground taxiing
  • Improved safety for on-ground personnel
  • Optimized engine maintenance, avoiding injection of potentially damaging debris from the

tarmac

  • Facilitated manoeuvring of the aircraft during maintenance operations

This technology will facilitate efforts for both airlines and airports to meet noise reduction and
emissions regulations.

With Green Taxiing, Messier-Bugatti continues to develop innovative, environmentally- responsible
technologies to improve landing system efficiency for the next generation of more electric aircraft.

*****

Messier-Bugatti, a Safran Group company, is a world leader in aircraft braking solutions. Wheels
and carbon brakes by Messier-Bugatti are used on more than 4,000 commercial aircraft worldwide,
and the company also provides innovative braking, steering, landing and monitoring systems and
equipment for nearly 10,000 aircraft. Messier-Bugatti delivers products and support services to
some 300 airlines and 20 air forces around the world. It has been a major supplier to Airbus for 30
years, and is also an OEM supplier for Boeing, Bombardier, ATR and Dassault. Messier-Bugatti
has a global workforce of 1,400 employees, mainly in France and the United States and reinvests
more than 15% of these revenues in Research & Development. Messier-Bugatti is certified to ISO
14001.

MESSIER-BUGATTI
Direction de la Communication
Alison Joly
Email :alison.joly@messier-bugatti.com
Tel +33 (0)1 46 29 18 22
+33 (0)1 46 29 18 22      

Zone Aéronautique Louis Bréguet
78 140 Vélizy-Villacoublay cedex – France
www.messier-bugatti.com