Can I Fly from LAX to Honolulu with a 737-800NGX?

[tf51d]

Anchorage to Honolulu should be doable because it's all downhill, right?

Not on the return trip :LOL:

[dcgator29]

You don't switch fuel tanks. It does it automatically. Assuming you have the fuel pumps on, which for the wing tanks, should be always.

[Spin737]

You don't switch fuel tanks. It does it automatically. Assuming you have the fuel pumps on, which for the wing tanks, should be always.

Weeeeelllll, I guess, sort of.

 

You might start on the center, taxi out on the mains, climb and switch back to the center and then back to the mains in cruise. I guess you're not moving a selector valve, but you're still changing which tanks you use by the output pressure. You're still going to turn of the the main pumps when the tank is empty, even if the jet has auto-shut-off.

[P50andpilot]

Weeeeelllll, I guess, sort of.

 

You might start on the center, taxi out on the mains, climb and switch back to the center and then back to the mains in cruise. I guess you're not moving a selector valve, but you're still changing which tanks you use by the output pressure. You're still going to turn of the the main pumps when the tank is empty, even if the jet has auto-shut-off.

Why in the world would you do that? I'm assuming your being sarcastic.

 

 

Justin whetstone

[scandinavian13]

 

 

Why in the world would you do that? I'm assuming your being sarcastic.

 

Nope.

 

See here: http://www.faa.gov/news/press_releases/news_story.cfm?newsId=5352

[tf51d]

Weeeeelllll, I guess, sort of.

 

You might start on the center, taxi out on the mains, climb and switch back to the center and then back to the mains in cruise. I guess you're not moving a selector valve, but you're still changing which tanks you use by the output pressure. You're still going to turn of the the main pumps when the tank is empty, even if the jet has auto-shut-off.

There is no selector valve to switch tanks on the 737. If you want to use the wing instead of the center tanks (For whatever reason), you would turn off the center pumps. If at the same time you want to crossfeed fuel from the center tank into the wing tanks you would open the crossfeed valve. As Kyle stated though, it's not normal procedure

 

 

Tom Cain

[scandinavian13]

 

 

There is no selector valve to switch tanks on the 737. If you want to use the wing instead of the center tanks (For whatever reason), you would turn off the center pumps. If at the same time you want to crossfeed fuel from the center tank into the wing tanks you would open the crossfeed valve.

 

You do realize he was posting that based on the fact that he flies the thing, right?

[tf51d]

You do realize he was posting that based on the fact that he flies the thing, right?

No I didn't being he's talking about selector valves!

[scandinavian13]

No I didn't being he's talking about selector valves!

 

Re-read it.  He said "I guess you're not moving a selector valve, but you're still changing which tanks you use by the output pressure."

 

It's fine the way he wrote it.  He was referencing the fact that, while other aircraft have valves and options to select tanks, the 737 does not.  You control tank selection based on output pressure (through the application of fuel pumps).

[tf51d]

Re-read it.  He said "I guess you're not moving a selector valve, but you're still changing which tanks you use by the output pressure."

 

It's fine the way he wrote it.  He was referencing the fact that, while other aircraft have valves and options to select tanks, the 737 does not.  You control tank selection based on output pressure (through the application of fuel pumps).

My mistake, I misread it, thanks!

 

Tom Cain

[Spin737]

What Kyle said.

[scandinavian13]

 

 

My mistake, I misread it, thanks!

 

Thought so - just lookin out.  No prob.

[E6BAV8R]

You might start on the center, taxi out on the mains, climb and switch back to the center...

 

Why on earth would you want to do that?

[Spin737]

 

Why on earth would you want to do that?

I wouldn't want to do all that switching, buts it's SOP.

 

Let's say you have 17000 in the mains and 3000 in the center. You push and start out of the center. After start, since you have less than 5000, you taxi and takeoff on the main tanks. Once you accelerate to 250, you can turn the center back on. Then at some point in cruise you use the center tank fuel and turn the pumps back off.

[P50andpilot]

Ok you got me. I knew of the AD but didn't realize it was so in depth. I thought it was just to not allow them to run dry.

 

 

Justin whetstone

I wouldn't want to do all that switching, buts it's SOP.

 

Let's say you have 17000 in the mains and 3000 in the center. You push and start out of the center. After start, since you have less than 5000, you taxi and takeoff on the main tanks. Once you accelerate to 250, you can turn the center back on. Then at some point in cruise you use the center tank fuel and turn the pumps back off.

Is this a specific company SOP? The AD I just read mentions 1000lbs. So with the above example you could use the center pumps for ground and takeoff ops.

 

Just curious.

 

 

Justin whetstone