Take off Config warnings
 

Ive been reading through my FCOM and I cant find the conditions that casue a
Take Off config warning

Can anyone name the configurations that will cause this. Some I know are

Take off flaps not set
Spoilers extended

Maybe trim not in green range and parking brake on but not sure...

Thanks in advance

Aslan

A copy/paste out of the 737 FCOM:

The takeoff configuration warning is armed when the airplane is on the ground and either or both forward thrust levers are advanced for takeoff. An intermittent warning horn sounds if:

• trailing edge flaps are not in the flaps 1 through 25 takeoff range, or
  
• trailing edge flaps are in a skew or asymmetry condition, or have uncommanded motion, or
  
• leading edge devices are not configured for takeoff or have uncommanded motion, or
  
• speed brake lever is not in the DOWN position, or
  
• spoiler control valve is open providing pressurized hydraulic fluid to the ground spoiler interlock valve, or
  
• parking brake is set, or
  
• stabilizer trim not set in the takeoff range.
  

Hope it helps

its cool i found the answers

sorry yes it was the 737ng

thanks for the help, just found that exact paragraph

Is it deactivated during the take off run after a certain point?

E.g., assuming that all systems are in the correct place at the start of the take off run but during the take off whilst accelerating on the ground, if one of the systems monitored goes outside a parameter, will the warning sound?

Not sure anyone wants to find out…

This would be part of the air/ground logic so as long as the systems are in ‘ground’ logic then yes.
Let’s consider a runaway trim, initially during take off run the trim is in the green band (no warning) and subsequently the trim moves outside of the green band.

BN2 - thank you

Not too sure, probably it just depends on GND/AIR Mode switch. I don't think it has T/O or LDG Inhibit like the 'Bus (which is actually a super useful feature).

You mean "Idiot Pilot Detector"?

:) The bus has a T/O CONFIG warning, but what I find super useful is the INHIBIT mode, which suppresses minor/nuisance warnings during takeoff and finals.

Thank you.

A lot of inhibits kick in at 80kts, cautions and warnings, and reactivate at a pre determined alt, say 400'

Yep

(you're talking abt the A320, right??)

You mean like this one?

https://avherald.com/h?article=4b789227

Nope, just generalising.

On Boeings with EICAS, there are numerous messages that get inhibited at 80 knots - in fact if you need your message to fall through the inhibit, you need to specify that. Engine wise, there are only a few messages that fall through - ENG FAIL and ENG FIRE coming to mind.