Probe

If my meager mind can remember, I believe UAL paid more in the late 90's for 50 seat CRJ's, than we just paid for 737-700's. Sounds like a no-brainer.

How much are they paying me to fly that thing?

baseball

What's with all the strange noises you hear while taxing around inside the airbus? Never heard them in the cockpit while jump seating, only in the main cabin. It sounds like R2D2 is introducing himself to c3Po in the middle of a electric motor and servo show.

baseball

Is the 319/320/321 a common type?

UAL T38 Phlyer

If they are taxiing single-engine, it is the hydraulic transfer pump/motor. It uses pressure from the operating system to drive a hydraulic motor, which then drives a hydraulic pump to pressurize the opposite system. (Been 13 years; apologies to the Bus drivers if the nomenclature isn't right).

But it only runs until the other system comes up to pressure---then it stops. If there is a new demand on that system (flight control movement, for example), the pressure drops, and it happens again.

Same thing happens at the gate when arriving. Right engine gets shut down, and cargo doors (hydraulic, if I recall correctly) are opened. Transfer pump starts running, and everyone thinks it sounds like a barking dog or a big double-pull lumberman's saw. When the left engine shuts down, the transfer system slowly fades out, like the dog is falling asleep.

It seems to be located in the belly between the overwing emergency exits, and that is where it is the loudest.

ozoneflyr

Method 2 isn't even a thing on the 737! It is a dispatch exercise only. There is no point in the lower 48 where drift down is ever a problem.

NFLUALNFL

They are. fill, fill, fill

buscappy

well, then it IS "a thing"

maybe not a big deal. or a concern. but "a thing"

i flew it. i know. don't try snow jobs or semantics on a pilot forum. because there are pilots on here.

ozoneflyr

It is a dispatch exercise because Method 2 is computed in Sabre incorrectly with Wing Anti-Ice ON. The 737 uses wing-anti ice as a deicer only. The penalty that saber applies is invalid. This info was published recently in the 737 fleet letter. I guess you don't know what you don't know

Grumble

T38 hit it, mostly. The whine you hear is an electric hyd pump that's run when a motor is shut down. This prevents the power transfer unit (PTU) from trying to pressurize the opposite side that isn't being powered by the engine driven pump. That barking dog you hear in the back is the PTU. You run the electric pump to pressurize the system so the passengers don't have to listen to the barking dog. At the gate you'll hear electric hyd pumps come and go since that's how the cargo doors are opened and closed.

buscappy

okay maybe u got me
but back in the day, on the lil guppy, we were always lookin at that method one and two stuff crossing the rockies

but... i stand by my other points about guppy..