Can't figure this out..intermittent horn on take off

[andreadebiase 5]

Can anyone suggest what I am doing wrong? I am ready to take off, aligned with runway, LNAV and VNAV engaged, as soon as I hit TO/GA the intermittent horn comes sound starts (the same sound that I hear when on ground I move the thrusts forward too much), LNAV and VNAV disengage but as soon as I am few feet above the ground the both engage again and i am able to go on autopilot and everything looks good. I am sure i am missing something but i cannot figure out what...

 

Andrea De Biase

 

[Slayer 190]

improper flaps setting?

[pete_auau 1,152]

Who needs  flaps:) just ignore  the horn :wink:

[andreadebiase 5]

nope, set at 5 on both FMC and flap lever, i know it is a formal complaint about takeoff config but i cannot figure out what. Trim wheel also ok (more or less) although i cannot see the real trim value i am putting it on because when i mouse over it doesn't appear as it should according to tutorial 1. 

[Rhinozherous 90]

Trim should be good when in green band. You can setup the mouseover popup in the FSX settings... actually I dont know where exactly but it should be intuitive. Try to switch it on and set trim to the value provided by the fmc. 

 

About FMC, is all set up there?

 

Also I found this:

The config warning is armed on the ground and when one or both thrust levers are advanced for takeoff. it will sound under the following conditions.
1 the trailing edge flaps are not in the 1 to 25 position for take off or 
2 the leading edge devices are not configured for take off or
3 the speed brake lever is not in the down position or
4 the spoilers are not down with the speed brake lever in the down position or
5 the parking brake is set or
6 the stabilizer trim is not set in the take off range.

[Spin737 102]

It's the takeoff comfiguration warning. Most likely the trim out of the green band or the speedbrake not in the down detent.

 

Go through the list Rhinozherous provided.

 

And do a config check BEFORE you hit the TOGA button.

[JRBarrett 3,034]

Be sure you are not arming the spoilers for auto-deploy before takeoff. Sim pilots who also fly Airbus models sometimes make this mistake. Arming the spoilers IS required before takeoff on the Airbus, but is NOT required on Boeing models.

[77west 139]

A small intermittent horn may be heard as you advance the thrust levers due to a delay in the overwing exit flight locking mechanism. This self-clears pretty quickly though. Has happened to me maybe 3-5 times ever.

[pete_auau 1,152]

A small intermittent horn may be heard as you advance the thrust levers due to a delay in the overwing exit flight locking mechanism. This self-clears pretty quickly though. Has happened to me maybe 3-5 times ever.

 

This is abit  different   to the op  issue  since  it  doesn't  go away  till he  is above  the ground  flying

[77west 139]

 

 

This is abit different to the op issue since it doesn't go away till he is above the ground flying

Ah right. Perhaps I should read properly lol!

 

Probably flaps or trim? What about an open door?

[pete_auau 1,152]

Probably flaps or trim? What about an open door?

 

Flaps  and  trim  will give  you the beeping  sound,   all  what  will happen  if  you have  the door  open is  the caution light  appear  on the recall  and  door  panel on the overhead  panel  no beeping  sound.  Klaus   in post  5  has  summed it  well and  good  in his  post

[andreadebiase 5]

and the winner is...Jim! i had armed the spoilers, a bad habit from flying the standard planes of FSX where I think is required. 

 

Andrea De Biase