B737 Takeoff with VNAV and LNAV disarmed

[tae9141]

Hellow everyone, I am currently undergoing B737 and I got question to ask.

Let us say you were instructed to takeoff and fly runway heading soon after departure,
when you hit TOGA, does HDG SEL automatically selected and shows up on FMA or is it after departure ?

James

[gegemi]

yes. At least on the NG.

[FlyingStone]

It depends on the aircraft, as this is customer option.

It is either HDG SEL for takeoff, which means that as soon as you hit TOGA, you will get HDG SEL on the FMA, or it is wings level in which case the roll FMA will be blank.

[Banana Joe]

Customer options. Ours engage HDG SEL, but there is an airframe or two in the fleet that don't.

[Bergerie1]

As a very old fossil, why don't you just fly the aeroplane?

[733driver]

Originally Posted by Bergerie1

As a very old fossil, why don't you just fly the aeroplane?

One can do that and at the same time want to understand how the automation behaves i.e. what to expect from it.

[Small cog]

If one is doing a course on the 737, why not ask your instructor?

[ImbracableCrunk]

Originally Posted by Small cog

If one is doing a course on the 737, why not ask your instructor?

1. Why have this forum if not to ask questions?
2. There are also instructors here.

[Small cog]

I would imagine that the OP will be training for a particular model/variant of the B737 and probably taking an examination too. Why confuse the matter?

[Aoyb]

As mentioned it depends. Certainly on the classics and on some NGs the HDG SEL will become active on the FMA at 400’

Until then the roll mode will be blank and FD bars will command wings level

[Jumbo744]

Originally Posted by Bergerie1

As a very old fossil, why don't you just fly the aeroplane?

Take it easy hero. It has nothing to do with flying the plane. The guy is asking a question about how the automation works on takeoff.