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Author Topic: Stage 1  (Read 7613 times)

Offline Futeki

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Stage 1
« on: November 23, 2010, 11:51:06 AM »
Hey guys, I just finished my stage 1 test and missed a few questions. Some I get and one I don't.

It asked, you land at an airport with a altimeter setting of 29.92 instead of the current setting of 30.00 what will your altimeter say if the field elevation is 2,000ft.

I have the right answer now but...my mind does not want to wrap around the way to get the right answer.

Do you guys have any tricks or tips in the general area of altimeter settings and how to figure them out because I'm having trouble getting it even while looking at the book.
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Offline Rooster Cruiser

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Re: Stage 1
« Reply #1 on: November 23, 2010, 04:44:44 PM »
Your altimeter will read 2080 feet, assuming it reads perfectly and OAT is ISA standard temp for 2000 feet (+11C).

RC
« Last Edit: November 23, 2010, 04:47:49 PM by Rooster Cruiser »
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Offline Baradium

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Re: Stage 1
« Reply #2 on: November 30, 2010, 02:12:03 AM »
every inch is 1000 ft....

so every .1 is 100 ft

and .01  is 10 ft.   


you were .08 off from the actual field elevation,   so 10 times 8  is 80 ft.     


Since 30.00 is a higher number than 29.92  the field pressure is higher than your setting pressure...  that means that the field will be lower than your alimeter thinks.  As you set a higher altimeter setting your alimeter goes down.       
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Offline cotejy

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Re: Stage 1
« Reply #3 on: November 30, 2010, 03:00:13 PM »
I'm impress guys.  ::bow:: I use to know those things but I kind of forgot it right after the written test many years ago. Now, I just put the correct altimeter setting given by nearby ATIS and that's it.

I bet you can actually answer a question on gyro precession. Please don't. What's left of my brain would melt.
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Offline G-man

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Re: Stage 1
« Reply #4 on: November 30, 2010, 07:47:18 PM »
One has no need for altimeter settings---never get high enough...
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Offline Oddball

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Re: Stage 1
« Reply #5 on: November 30, 2010, 08:00:51 PM »
nnnnngggggggggggghhhhhhhhhh Gyro Precession ::loony:: ::complaining: ::banghead:: ::unbelieveable::
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Offline Rooster Cruiser

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Re: Stage 1
« Reply #6 on: December 01, 2010, 12:33:32 AM »
The PC-12 I fly only has only one mechanical gyro as an emergency backup.  Afraid I don't pay much attention to it.  My primary flight instruments are 5 inch EFIS displays that are driven by a pair of Attitude Heading Reference Systems, or AHRS, which in part utilize ring laser sensor technology to provide attitude, pitch, roll, and yaw information to the EFIS.

Bottom line is I don't ever worry about Gyroscopic Precession anymore.   ::loony::

RC
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Offline Cpt. Blade

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Re: Stage 1
« Reply #7 on: December 01, 2010, 03:04:49 PM »
Currently, I don't have to worry about gyro precession too... the aircraft I'm flying - the Aero Boero 115 - doesn't have one, all it's got is a magnetic compass. They doesn't have attitude indicators either; their only gyroscopic based instrument is the turn-and-bank indicators, but they don't work anyway  ;D

I know how to calculate altimeter errors, but only when it's measured in milibars... here in Brazil, we rarely use inches of mercury.
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Offline Mike

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Re: Stage 1
« Reply #8 on: December 01, 2010, 10:03:06 PM »
Quote from: G-man on November 30, 2010, 07:47:18 PM
One has no need for altimeter settings---never get high enough...

that's why I forgot all about the little window and the 1 inch is 1000ft and such . . .  ;)
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Offline Futeki

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Re: Stage 1
« Reply #9 on: December 02, 2010, 07:41:57 AM »
That does help Baradium thanks :D

Only one month to go before we start flying. I can't wait!

We will be flying old Cessnas so we have no fancy gizmos or gadgets lol.
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