Alternator on The Seminole?

[dueguard1]

Can Someone give me some information on what systems are powered by the alternator on the Seminole?

 

[siegelaviation]

What do you mean systems?

 

[dueguard1]

Yea...Basically whether it's the vacum pumps, comms, fuel pump,etc. ....what systems are functional, or not functional when the alternator is operating properly???

 

[siegelaviation]

Well....

If you lose one alternator, everything continues to function. If you lose both, then you are using only battery power. At that point, turn off everything you don't need. If you are in VFR, turn everything off to conserve power. If in IFR, the choice is yours. You don't have much time on the battery alone with all your radios, transponder, and lights going.

As for the Vacuum pumps, they are engine driven and not at all associated with the electric system. The engine driven fuel pumps continue to work. The aux fuel pumps, when turned on, will use battery power. Also, remember the gear is an electric motor that drives a hydraulic system. You need some power to lower the gear (unless you plan on using the emerg. gear extension).

 

[siegelaviation]

And not to be an A$$, how does someone with your credentials (CFI, CFII, MEI) not know this information? This is basic systems interaction that you should have learned as a Private Pilot.

 

[USMCmech]

Can Someone give me some information on what systems are powered by the alternator on the Seminole?

The electric ones.

 

[User546]

The electric ones.

That's probably the most simplest and precise way to explain it.

 

[joepilot29]

The electric ones.

Here's your sign

 

[siegelaviation]

Its very sad, isn't it? He is going to be right seat in a CRJ next year. I hope he gets the electric system on that sorted out.....

 

[dueguard1]

Its very sad, isn't it? He is going to be right seat in a CRJ next year. I hope he gets the electric system on that sorted out.....

Wow...........I post 1 question and I get completely insulted for asking it, In the training Forum At That!........some professional forum We've become here on Flightinfo!
GROW UP SIEGEL!

 

[A Squared]

Wow...........I post 1 question and I get completely insulted for asking it, In the training Forum At That!........some professional forum We've become here on Flightinfo!
GROW UP SIEGEL!

Well, there's a reason for that. Personally, I too was astonished and dismayed that somone claiming to hold a CFII and MEI certificate and, to have logged a thousand hours is asking a question like this. I mean, Jesus H CHrist on a popsicle stick, this stuff is basic private pilot stuff.

Can Someone give me some information on what systems are powered by the alternator on the Seminole?

Like USMCMech said, the electric ones. If you don't know which systems on a seminole are electrical, you probably shouldn't be flying one, and certainly not teaching others how to fly one.

Yea...Basically whether it's the vacum pumps, comms, fuel pump,etc. ....what systems are functional, or not functional when the alternator is operating properly???

The vacuum pumps are not electrical, (unless there's an optional electric standby vaccum source installed, which is unlikely) that again is just basic private pilot ground school stuff.

If you're embarrased that you're getting criticized, you need to think about *why* you're getting criticized, not rail against those who are criticizing you.

 

[timeoff]

A good place to start is the POH and identify what circuit breaker goes where. Rocker switches and circuit breakers will pretty much cover all electrical items outside of the obvious.

http://www.newpiper.com/aircraft/seminole/specifications.asp

Not much help, but it's a start.

 

[siegelaviation]

It wasn't a personal attack. It just makes me feel pretty crappy that their are instructors out there that get such a poor aviation education and get to the CFI/CFII/MEI level and can't answer a basic question. I would slap one of my private pilot or instrument students upside the head if they asked me a question like you asked.

 

[User546]

I would slap one of my private pilot or instrument students upside the head if they asked me a question like you asked.

I wonder what the FOI would have to say about that method of teaching.

 

[siegelaviation]

Haven't had to do it yet. By the third lesson my students know the systems and engine inside out. I get an A&P to give them a nice long lesson on what they are looking at in the cowling and how everything interacts.

 

[gkrangers]

Haven't had to do it yet. By the third lesson my students know the systems and engine inside out. I get an A&P to give them a nice long lesson on what they are looking at in the cowling and how everything interacts.

I think this is a great idea. My most lacking area of knowledge is systems and how everything works. I would encourage all instructors to do something similar to siegel if it is an option.

 

[User546]

dueguard1, here is a Seminole electrical schematic straight from the POH.

It should answer all your questions, without all the insults.

http://www.fileshack.us/files/1448/seminole_electrical.jpg

If you still have questions after looking it over, feel free to post them on here, and SOME of us will try to help you out.

 

[TheGreatChecko]

For the busses, remember:
BATMAN - Battery, Avionics #1, Tie, Main, Avionics #2, Nonessential.

Its one of the few mnemomics that I really like and actually remember.

GreatChecko

 

[Kream926]

this Q ties up there with if i lose the alternator will the prop start turning?

ranks up there with the girl who at (pick your univirsity flight school) decided to put a plane down in a field when she got a low votage light VFR day......

wait were you that person?

 

[DC8 Flyer]

this Q ties up there with if i lose the alternator will the prop start turning?

ranks up there with the girl who at (pick your univirsity flight school) decided to put a plane down in a field when she got a low votage light VFR day......

wait were you that person?

Hey! I found said girl in the field, while on a lesson with a student. Kind of creepy getting asked my radar to fly this heading and "look" for a downed aircraft.

 

[Kream926]

did this happen in a state where its real real cold?

 

[Way2Broke]

I wonder what the FOI would have to say about that method of teaching.

I think that is the FOI of INTENSITY! THATS INTENSITY LEVEL TEN!

 

[siegelaviation]

I like to think of it as recency as well. As in, "Remember when you did that the last lesson and I smacked you?"