Boeing Lounge Boeing 737 LRD

[ZapBrannigan]

So bleed off on the (affected engine)
Isolate
Bleed that isn't on the (affected engine) side stays on?

Not exactly. The only one that matters is #1 engine. The idea keeping fumes and smoke restricting visibility out of the cockpit so left bleed.

It's to buy you time until you can pull the fire handle.

Supposedly Boeing is working on a fix that would immediately close the PRSOV as soon as LRD activates. But knowing them, lord knows what other unintended consequences THAT will cause.

 

[BEEF SUPREME]

Not exactly. The only one that matters is #1 engine. The idea keeping fumes and smoke restricting visibility out of the cockpit so left bleed.

It's to buy you time until you can pull the fire handle.

Supposedly Boeing is working on a fix that would immediately close the PRSOV as soon as LRD activates. But knowing them, lord knows what other unintended consequences THAT will cause.

SEVERE FIRE DAMAGE OR SEPARATION (#1 ENGINE) - L Bleed closed?

But not #2?

Hopefully the fix won't mess up my career outlook...

 

[ZapBrannigan]

SEVERE FIRE DAMAGE OR SEPARATION (#1 ENGINE) - L Bleed closed?

But not #2?

Hopefully the fix won't mess up my career outlook...

I'm not saying either of us should do what Bill Bulfer is suggesting.

I'm just saying I get where he's coming from. If LRD reduces cockpit visibility to 6" in 15 seconds (not ideal with an engine eating itself at low altitude) and turning off the bleed could buy you time to get through the QRC and pull the fire handle... it's hard to argue against it.

(The number two provides air to the cabin. We aren't immediately concerned about visibility back there. The number one provides air to the cockpit. We definitely ARE concerned about visibility up there.)

 

[Beaker]

TBM 700, PC-12, KA200, CJ1, 2 and 3, CitationX, Falcon 900, EMB175, 737. They all kind of fly the same with the exception of the landing flare for the straight wings. Since the X every aircraft has had the mains behind the CG. All really similar IMO.

The mains are behind the CG of every tricycle geared airplane, no? Otherwise they would all tip back on their tails on the ground.

 

[ASpilot2be]

The mains are behind the CG of every tricycle geared airplane, no? Otherwise they would all tip back on their tails on the ground.

The 737 and A321 will do that if not careful.

 

[inigo88]

Supposedly Boeing is working on a fix that would immediately close the PRSOV as soon as LRD activates. But knowing them, lord knows what other unintended consequences THAT will cause.

I’m 50/50 torn whether they will bungle the fix, or whether your employer will lobby them out of fixing it in the first place to prevent needing a new type.

 

[ZapBrannigan]

I’m 50/50 torn whether they will bungle the fix, or whether your employer will lobby them out of fixing it in the first place to prevent needing a new type.

That's fair.

I'm going to go with create a fix that unintentionally creates a second set of unintended consequences.