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PHD. MBA. MHS. Type rated on A350, A330, B777, B747-400, B747-200, B757, B767, B737, B727. International Airline Pilot / Author / Speaker. Dedicated to giving the gift of wings to anyone following their dreams. Supporting Aviation Safety through training, writing, and inspiration. Fighting for Aviation Safety and Airline Employee Advocacy. Safety Culture and SMS change agent.

Showing posts with label Phases of Flight. Show all posts
Showing posts with label Phases of Flight. Show all posts

Wednesday, August 29, 2012

Difference between Boeing and Airbus FMS

The Reasons I'm in Cyprus: 

Kayla and Ellis
Miles
The Bones being researched


The Reason I'm Posting Training Blogs:



 Answers to yesterday’s quiz.

  • What is the major difference between the FMS phases of flight?  The major difference between the FMS phases of flight is the target speed (magenta bug) in that flight phase.
  • How can you tell which is the active flight phase? The target speed is the primary indicator, but the active flight phase is also printed in green at the top of the PROG and PERF pages on the MCDU.
  • When the approach is activated, what is the target speed? When the approach phase is active the target speed is VAPP The magenta bug. 
  • If the target speed is Green Dot, what is the active phase of flight? The target speed in the go-around phase is Green Dot. (Unless you are holding, have a speed constraint, or speed limit.)
  • How do you shift to the climb phase, from a go-around? Three ways:  Change the destination and enter a new cruise altitude.  Activate the approach and enter a new cruise altitude.  Or activate the alternate.

How well did you do on the quiz?


Both Airbus and Boeing use flight phase changes as a means of managing the speed profile as the flight progresses. The takeoff, climb, cruise, descent, approach, and go-around flight phases each have a unique speed profile. Each FMS changes the flight phases to reflect the desired speed profile for that portion of the flight.

A primary difference between Boeing and Airbus airplanes is the automatic target speed selection, and how it is handled by the FMS.

The greatest differences occur in the approach phase. Many Boeing models rely primarily on pilot selection with the speed window. The Airbus allows the FMS to manage the target speed all the way to touchdown. But like Boeing, Airbus also enables the pilot to manually select the speed at any time.
This design allows normal deceleration with flap extension that requires no manual speed selection. It also enables automatic selection of approach speeds with wind additives due to the groundspeed-mini function, protecting against decreasing headwind windshear on final approach.

Now you know the difference… tomorrow we will fly the Airbus A330 Fully managed.

Enjoy the Journey!
XO Karlene

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