F/D arming

[Maniac59 0]

When is the correct time to arm the F/D during pre departure?

 

Maniac59

[scandinavian13 5,192]

 

 

When is the correct time to arm the F/D during pre departure?

 

Depends on the airline SOP.  In order to satisfy turning them on pre-departure, any time from when the aircraft is powered to the point where you're sitting short of the runway is fine.

 

I turn mine on as part of my pre-start setup.

[cagrikartal 8]

I arm it at cockpit preparetion

[Maniac59 0]

Oh ok.. because I recently had a sitiuation where the A/P would not engage after lift off.

I had to switch both F/D's off and on and then it would arm.

I thought maybe I was arming the F/D's too early at the gate before p/s....

 

Maniac59

[Steven_Caffey 23]

Oh ok.. because I recently had a sitiuation where the A/P would not engage after lift off.

I had to switch both F/D's off and on and then it would arm.

I thought maybe I was arming the F/D's too early at the gate before p/s....

 

Maniac59

 

Probably a coincidence, did you have both a lateral and vertical mode selected before turning the AP on? Were your controls centered?

[Maniac59 0]

Hi Steven.  Yes noth VNAV & LNAV were armed and controls centered before attempting to arm the A/P.

 

 

Maniac