SurClaro Flight Simulator Resources

Posted: Sat Mar 17, 2007 9:16 pm Post subject: Alternate Flaps?

Hi guys!

I have noticed this button on the 737NG overhead panel..What exactly is it for???

Posted: Sat Mar 17, 2007 11:19 pm Post subject:

LOl! hmm....

this is tricky, your the 737 master so I will do my best...

flaps come out of the flaps? upside down airlerons? mabey flaps pop out like on the DC3??

its a mystery!

Posted: Sun Mar 18, 2007 12:02 am Post subject:

uh...
how about if your main flap system fails and that is a back up/ fail safe system so the flaps can still be deployedl???

Posted: Sun Mar 18, 2007 11:07 am Post subject: Fail Safe

Hey Behrentzs,

Aircraft are built with LOTS of different ways to do things, because you can't just pull over to the side of the road if something goes wrong.

Under normal conditions, the flaps are powered hydraulically. There are 3 hydraulic systems on a 737. System A (powered by the engines),B(powered electrically) and Standy (C). If system A fails, the pilot may switch to the B hydraulics and still have limited functions available to him. System C is the smallest of the hydraulic systems and is use only as a last resort.

Alternate Flaps can be used in the event of a System A and B hydraulic failure. However, the Standby system is very small and not very powerful. It can extend the leading edge flaps, but not retract them. Trailing edge flaps can be extended and retracted as normal, but it takes FOREVER! If i'm not mistaken, In the event of a complete Hydraulic failure, the Alternate Flaps can also be operated using the aircraft battery or APU.

Hope this helps,
Bromster.

Posted: Sun Mar 18, 2007 11:09 am Post subject:

Thanks guys, now I finally get it Very Happy