UAL Bagsmasher
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DC-10 Stall Test Question

Wed Feb 21, 2001 1:51 pm

Which breakers must be powered in order to get the stall test system to function? Is it just one breaker? If so, whereabouts on the breaker panel is it located?
 
FDXmech
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RE: DC-10 Stall Test Question

Wed Feb 21, 2001 2:10 pm

No c/b is pulled for the DC10 stall warning test as far as I know. Are you perhaps thinking of trying to inhibit the autoslat function from activating while performing a stall warning test?
You're only as good as your last departure.
 
FDXmech
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RE: DC-10 Stall Test Question

Wed Feb 21, 2001 2:21 pm

I'm sorry, I misread powered for pulled.
You're only as good as your last departure.
 
UAL Bagsmasher
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RE: DC-10 Stall Test Question

Wed Feb 21, 2001 2:22 pm

No...I was up in a DC-10 a few days ago and hit the stall test switch on the overhead panel, and nothing happened. The aircraft was secured for the night and all the yellow breakers were pulled. I was just wondering if that had something to do with why the stall test didn't function.
 
UAL Bagsmasher
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RE: FDXmech

Wed Feb 21, 2001 2:25 pm

I've been meaning to ask you something else also. How are the Ex-UA DC-10's holding up over at FedEx? They give you guys a lot of problems?
 
FDXmech
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RE: DC-10 Stall Test Question

Wed Feb 21, 2001 2:53 pm

The stall warning test has a time delay circuit which requires the test switch to be held in test for approx 10 seconds. Its not an instant stick shaker like other types.

I'll get back to you on the UAL DC10's because the babys crying right now.
You're only as good as your last departure.
 
Guest

DC10 Stall Warning System

Wed Feb 21, 2001 5:31 pm

A dual stall warning system provides audible and tactile warnings of possible stall conditions of the aircraft. An auto slat extend system, controlled by the stall warning system, partially extends the outboard slats at onset of a stall warning.

To avoid an unnecessary rejected take-off due to a false stall warning just after initiation of rotation, the system remains inoperative for 5 seconds after nose-wheel lift-off.

2 angle-of-attack sensors are installed, one on each side of the forward fuselage area. They consist of an aerodynamic vane which positions a synchro. A heater is installed to provide anti-icing in flight.

Stall warning air/ground switches are located on the nose landing gear. They are provided to switch off the system on ground, except during test procedure.


Now take a look above the F/E panel...

Row B-13 you'll find the "AT/SC Stall warning 1" CB (it's on AC Bus 1), and row D-13 you'll find the "AT/SC Stall warning 2" CB (it's on AC Bus 3).

Then row C-17 you'll find the "Capt stick shaker" (DC Bus 1), and row E-17 the "F/O stick shaker" (DC Bus 3).
 
UAL Bagsmasher
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RE: DC-10 Stall Test Question

Thu Feb 22, 2001 3:11 am

Thanks for all your answers!
 
OldMan
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 5:34 am

Mr. Bagsmasher, I have read several of your posts and it sounds like you are spending a lot of time in the cockpit when no one is around? The many questions you pose could be answered by your line maintenance dept. Are you permitted in the cockpit? Is it UAL policy to let other than Maintance or flight crews in and randomly flip switches and mess with circuit breakers? I'll bet against it, and suggest you reconsider less another person on the ranp be injured, or passengers & crew!
 
OldMan
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 5:38 am

Just wondering if I'm alone here or are there others that perhaps share my opinion. Just sounds like an accident waiting to happen.
 
VC-10
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 7:10 am

Oldman,

My sentiments exactly, I was going to post something similar yesterday. However after looking at Bagmashers profile I couldn't be sure if he was authorised to be
carrying out what he does. You are right, he is going to kill or injure someone soon
 
Pilot1113
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Oldman & VC-10

Fri Feb 23, 2001 7:33 am

I have met (and am friends with) UAL_Bagsmasher and I can assure that you that he means no harm.

He is usually accompanied by a mechanic or a pilot from said company. I'm sure he was this time, but it wasn't said in his original post (as that wasn't the intent).

Now, isn't the F/E's responsibility to make sure that all circut breakers are in and, if they're not, placarded?

If he accidently left this breaker "poped" I'm sure that the F/E would notice this during the pre-flight and consult the maintenance manual and, upon finding nothing, pop it back in. No harm, no foul.

However, I do see your point. If someone with his credientals can gain this much access to a passenger aircraft what's to stop someone with a more sinister motive?

I'm not trying to start a war here, I'm mearly trying to defend my friend.

- Neil Harrison

 
VC-10
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 8:07 am

The question isn't leaving a CB popped, but operating a a/c system unauthorised. It may be a small switch in the cockpit, but at the other end of the system it may be a control surface with 3000psi of hydraulic pressure behind it. People have quite literally lost a finger or even their head in such circumstances.
 
VC-10
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 8:30 am

Another point is, if UAL Bagsmasher was accompanied by a suitably qualified mech or pilot, he would not have to ask the question here. His chaperon would be able to answer.
 
crjmech
Posts: 257
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 8:47 am

Though I am sure UAL Bagsmasher's intentions were purely benign, I gotta side with VC-10 and Oldman on this one. Under no circumstances should anyone be in the cockpit other than authorized personnel; i.e. flight crew or maintainence. If he was escorted by such a person, then O.K. If not, well let's just say that if I ever caught one of our rampers in the cockpit, there would be some........unpleasantness.
Thou shalt mind thine altitude,lest the ground reach up and smite thee.
 
OldMan
Posts: 207
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 8:53 am

Mr Pilot 1113,
I understand, friendship is great but you cannot defend stupidity! Here is a man that admits to going into the cockpit and turning on the stall warning. Why? Has he gone to school on that aircraft and its systems? Would he recognize a good test vs. a failed test. Does he know what he is doing? Hell, might as well hit the starter and rotate #2 and see if it works or makes noise. Yes that is one of the duties of the F/E also the F/0 and the Buck stops with the man in the left seat. I can tell you from experience for example on a late nite aircraft change, everyone's a little tired and the company is pushing for on time departure. That being said, There are many C/B's that are "hidden" from view and could be missed by all three. Like someone said "S--T Happens". I don't want to make a "book" of this but as innocent as his intentions may be, he has admitted to being there alone. Should he get into trouble it is a very simple task for UAL and FBI to copy all in his c drive and use that against him. If he is a friend please tell him to be escorted by maintance foreman or line maint. Rep. Just one crew menber returning to retrieve a forgotten item and hearning bells and whistles goiing off will be grounds for immediate termination, and more. Don't be screwing around at ORD.
I cut this thing 3 times and it's still to long..Oldman
 
OldMan
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 9:03 am

After all that I forgot to ask that those of us that may be well informed about various systems perhaps should think twice about giving "to"much information. We could be talking to Sadam's friends in Iraq and how would we know..Food for thought..
 
LuckySevens
Posts: 186
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 10:39 am

Oldman,
You can never be too sure! I suggest we delete the tech/ops forum entirely as it could be a breeding ground for anyone who aspires to be a pilot! Seriously, anywhere you are you should be careful about disclosing information, but think with all the information on the internet, there's probably more detailed DC10 schemas out there than on this board.  Big grin
 
UAL Bagsmasher
Topic Author
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 2:34 pm

To calm everyone's fears.. YES..I did have an A&P with me. He hasn't worked on the DC-10 in severeal years, so he was rusty as to where the breaker(s) was. I am always with a mechanic anytime I touch something up there. I'd be afraid not to.
 
UAL Bagsmasher
Topic Author
Posts: 1839
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 3:15 pm

Many of the technical questions I ask on this forum are from things I have seen or heard at work. My previous question on this forum was about the B727 F/E panel and the guage fluctuating. I asked a mechanic, who wasn't 100% sure. He guessed it was the battery charging, which turned out to be correct. I then came to Airliners.net where I knew there would be someone who would be able to tell me for sure. Last time I checked, there was nothing in the rules about observing instruments in a cockpit.
Never have I or will I operate any device in a cockpit without a mechanic present who gives me permission to do so. Once I was allowed to tune the ADF to a local radio station after I asked a mechanic how the device worked. He explained the basic functions and showed me how pilots sometimes tune into ball games for passengers. We dialed up a local news station to demonstate how it worked.
Never have I, or will I operate anything without permission and supervision. I am not that dumb. I have not and would not mess with anything I know nothing about. I have never and would never compromise the safety of our passengers and crews. I have not and will not jeopardize my job for the sake of playing around. I hope I have made myself clear. I appreciate the concern many of you have shown about safety. It says a lot about your charecter Smile
 
Archie Bunker
Posts: 359
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 3:36 pm

No wonder why I have to wait almost an hour to claim my baggage at ORD. The rampers are in the cockpit instead of the cargohold. Big grin
 
UAL Bagsmasher
Topic Author
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 3:39 pm

I didn't hear that Big grin
 
Guest

DC-10 Stall Test Question

Fri Feb 23, 2001 9:02 pm

I agree that everybody should be carefull when disclosing information and sharing his/her knowledge on the Internet...
But regarding aircraft systems and operation, don't forget that a full set of manuals (systems, performance, procedures, etc.) is in every cockpit.
Errr... Well, I hope so !  Big grin

If the guy has access to the cockpit, he has access to everything.
 
OldMan
Posts: 207
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RE: DC-10 Stall Test Question

Fri Feb 23, 2001 9:34 pm

Ok Mr. Bagsmasher. I have read your post 02-23-07:15 and I like what I heard. Thanks for explaining to me that you are always with someone qualified. It was not my attempt to stir up a hornet's nest, just don't want anyone to be injured. And to all others, perhaps we should but this one in the hangar and not whip a dead horse any more? Nuff Said.
Lets all be safe out there! Smile
 
AA737-823
Posts: 4888
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Attn Oldman And VC-10

Sat Feb 24, 2001 10:44 am

Oh my gosh, you people make me sick. This is not the spirit of this forum. You are accusing someone of being Saddam Heussein? How ludacrous is that? Okay, let's say this guy is Quadaffi's vile henchman. What is he going to gain by knowing HOW TO TEST THE FRIGGIN' STALL WARNING SYSTEM? Oh my gosh, you folks need a life. Go make sure someone else is doing their job. This forum is not a hideout for big brother. Or did you go far enough in your formal education to know who Big Brother is? Those of us that are trying to learn here have little tolerance for paranoia.

I suggest you take your paranoia elsewhere.

Don't touch the stall test, little boy, you might kill someone. Please, give me a break.
 
Guest

RE: AA737-823

Sat Feb 24, 2001 12:17 pm

> ... spirit of this forum. You are accusing someone of
> being Saddam Heussein?

Saddam Hussein.

> How ludacrous is that?

Ludicrous.

> Okay, let's say this guy is Quadaffi's vile henchman.

Gaddafi (Moamer al), even Khaddhafi or Qaddafi.

> Oh my gosh, you folks need a life.

Yes. And you need to go to school for a little while longer, so you can improve your English  Smile (or at least ... go buy a spellchecker  Big grin)

Sorry everybody. Couldn't help myself  Innocent.

dcy.
 
AA737-823
Posts: 4888
Joined: Wed Mar 01, 2000 11:10 am

Kadafy.

Sat Feb 24, 2001 1:58 pm

I dun't give a whoot how you'r wantin ta spell it, I thank we all got thu pictur.

At least you agreed with me on most of it.

I apologize for my spelling error.

Randy
 
UAL Bagsmasher
Topic Author
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RE: Jetpilot

Sat Feb 24, 2001 2:52 pm

Thanks JETPILOT...Finally someone sees where I'm coming from Smile
 
VC-10
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RE: DC-10 Stall Test Question

Sat Feb 24, 2001 5:49 pm

AA737-823

Stop acting like a 5 year old & read the posts again. Nobody was suggesting UAL_Bagsmasher was a terrorist or has any terrorist links. His second post above suggested he just walked on to a Flt Deck and hit a switch.

Oldman's and my own concerns are for someone operating a switch without checking it is safe to do so. I have seen the physical injury caused by an individual operating hydraulic pumps without checking it was clear to so. At the time there was somebody else was working on the elevators and got his hand trapped between the powered elevator leading edge & the tailplane trailing edge, not a pretty sight. I have also heard of people being cut in two by hydraulics being applied and the gear doors closing on them.

Now if the ignitors switch was operated with someone working on the engine they would get 20Kv passed through them. I think you will agree a shocking if not lethal experience.

I have no problem with UAL_Bagsmasher operating a/c systems PROVIDED he is supervised by a correctly authorised/qualified engineer or Pilot.

I hope now you will see where I am coming from and that my concerns are for other people working on the a/c at the time. Aeroplanes can kill.

 
cedarjet
Posts: 8101
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RE: DC-10 Stall Test Question

Fri Mar 02, 2001 11:32 pm

It's ridiculous to think Saddam or Bin Laden or whoever would need to look on the internet, let alone a discussion forum, to find technical info for an airliner. Think about who flies the DC10, with checklists, maintenence procedures etc lying around: Ariana Afgan, Aeroflot, DAS Air Cargo (Uganda)... Bin Laden just has to ask a member of the Taliban to go into the Ariana maintenence base (or the remains of) at Kabul Airport and get all the books on the 727, DC10 etc. The A300 and A310 is operated throughout Africa, ditto 747 Classic (Okada, Hajj operators etc). The Pro (I use the term loosely) version of FS 2000 is pretty detailed. Ever checked out www.bavirtual.co.uk? I wouldn't keep stuff to yourself here, there are far more convenient information channels available to any budding terrorist - read The Anarchists Cookbook, available from Amazon worldwide, for further info.
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz
 
VC-10
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RE: DC-10 Stall Test Question

Sat Mar 03, 2001 12:09 am

The Afghan DC-10 left Afghanistan in March 1983, I know, because I was on it !

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