Airbus Drivers: Single-Engine Taxi 'n APUs

Baronman said:
Haven't read all the previous posts but at BlueJet:

Single engine taxi is pretty common at JFK with a long lineup for departure. APU stays on and is used for air conditioning and #2 start.

Recently we got the memo that APU must be on for SE taxi (re Fire system), so that changed the SE taxi on arrival procedure a bit. SE taxi coming in is rarer just because taxi times tend to be shorter, especially landing 31R at JFK.
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Interesting!

Via pre-merger carry through procedures that are still in place from Brand X, when we use the APU for single engine taxi, the APU bleed is shut off, cross bleed opened, and the operating engine bleed used to supply both packs. The reasoning given is that the APU intake picks up the exhaust from the operating engine.

That's a major reason why the crossbleed is just simpler as the panel is already configured for the cross bleed with or without the APU.
 
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Cptnchia said:
There is no written procedure for a huffer cart start on the MD88. Just plug it up, check your duct pressure and carry on. There is one for a bottle start, but when was the last time anyone say one of those?
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You haven't lived until you've done a "buddy start" on a DC-9...

...followed by a powerback.

Richman
 
Richman said:
You haven't lived until you've done a "buddy start" on a DC-9...

...followed by a powerback.

Richman
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We actually did those a few times on the CRJ200 out of all things.

The absolute best though was one time we got a 700 stuck in Freeport due to a dead APU and no air cart or bottle. They sent a 200 over with a buddy start hose to try to jumpstart it but discovered AFTER it got down there that the connection was different on the 700 engine and the hose wouldn't lock in to place and jam the butterfly valve open.
 
BobDDuck said:
We actually did those a few times on the CRJ200 out of all things.

The absolute best though was one time we got a 700 stuck in Freeport due to a dead APU and no air cart or bottle. They sent a 200 over with a buddy start hose to try to jumpstart it but discovered AFTER it got down there that the connection was different on the 700 engine and the hose wouldn't lock in to place and jam the butterfly valve open.
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Isn't that when you look at the FO and tell him the only other option is for them to attempt to hand prop the engine?

:D
 
PeanuckleCRJ said:
Interesting!

Via pre-merger carry through procedures that are still in place from Brand X, when we use the APU for single engine taxi, the APU bleed is shut off, cross bleed opened, and the operating engine bleed used to supply both packs. The reasoning given is that the APU intake picks up the exhaust from the operating engine.

That's a major reason why the crossbleed is just simpler as the panel is already configured for the cross bleed with or without the APU.
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That's confusatory!
 
PeanuckleCRJ said:
Interesting!

Via pre-merger carry through procedures that are still in place from Brand X, when we use the APU for single engine taxi, the APU bleed is shut off, cross bleed opened, and the operating engine bleed used to supply both packs. The reasoning given is that the APU intake picks up the exhaust from the operating engine.

That's a major reason why the crossbleed is just simpler as the panel is already configured for the cross bleed with or without the APU.
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I haven't looked at the single-engine, APU-on procedure, is that how we're going to roll?
 
Derg said:
I haven't looked at the single-engine, APU-on procedure, is that how we're going to roll?
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Yep! A few more buttons to press instead of just giving her a nudge of thrust.

skyw82 said:
Think of the passengers, when you single engine taxi the electric hydro ump makes a lot of noise.
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That's only if you forget to turn on the yellow electric pump in the after start flow.
 
PeanuckleCRJ said:
Yep! A few more buttons to press instead of just giving her a nudge of thrust.



That's only if you forget to turn on the yellow electric pump in the after start flow.
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The yellow pump makes noise too, although I typically don't concern myself with it. Not the barkin dawg
 
PeanuckleCRJ said:
That's only if you forget to turn on the yellow electric pump in the after start flow.
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Being over the age of 50 my yellow pump doesn't work very well anymore and the start flow is sometimes questionable.

Are we still talking about aviation here?!? :(

Single engine taxi the MD11......ah, that's a negative ghostrider!
 
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BobDDuck said:
The absolute best though was one time we got a 700 stuck in Freeport due to a dead APU and no air cart or bottle.
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Was doing a turn in the Dash 8 one winter afternoon time (sole airline at the airport) when the GPU crapped out immediately after shutting down.

Rapidly yank the QRH, do a battery start on #2.
Monitor battery temperatures as the passengers deplane.
Close the door.
Cross gen #1.
Shutdown #2.
Fuel truck shows up.
Fuel airplane.
Truck leaves.
Cross gen #2.
Shutdown #1.
Board pax and bags.

Then the deicing truck shows up and repeat the whole deice half, cross gen, shut down, deice other half, cross gen, depart.

It's a hard prop life sans APU.
 
The ERJ (145), now that has a super annoying pump running during SE taxi.

The Airbus yellow pump (I forget the color...it's the one over my head)....kinda annoying...but not really.....the dog bark I'll give you, it's annoying.

Running the packs off the engine bleed while the APU is up seems a little funny. I've never noticed our exhaust with the APU as the source. Also Pack Flow is HIGH with the APU.
 
Kingairer said:
I think it's more of a "weeiiiii"
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Stop.

We have a lot of full-on country people onboard that might be reminded of the some a pig makes.

Think: "Deliverance" (film)

LCGTDT8.jpg


(Crap, had the wrong movie cited) corrected!
 
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