iatra

IATRA180 · Post by **IATRA180** » Sat Sep 23, 2006 6:15 pm

Just to make this easy, i've gone through the entire forum with the search of IATRA and came up with a lot of help, some dating back to 2004. These are great, and i've taken all the advice, printed off the questions given, bought the book, printed the TC form regaurding reference guide...studied/crammed(dont know if I absorbed all of it) and got all the formulas down pat... but I'm really looking for anyone who has written the exam this year/past few months to try and remember anything different on the exam then what has been posted. Any recent question given that weren't on the forum list? any topics covered on the exam that are new? Anything new? If you have your list of wrong answers usually attatched to the exam after you write about what you need to review please post those (don't be shy, we all get some answers wrong) I'll take repeat info again... I'd really appreciate anyone who can PM or post for anyone else in my situation.

Please try and remember wx info as well, I hate the detailed weather questions as oppose to the basic knowledge of it all. ie. specific questions about different charts, which ones??? Jetstream? (climb or descend answer only?) anything in specific about what they want you to read on a chart? Thanks again to all the reply to my plea!!!

LASTLY, Anyone have an easy way to remember how to calculate true altitude? here's the examples out of ACourse:

1. An Aircraft departs an airport that has an elevation of 2000'ASL and levels off at 6000f ASL which is the MEA for the victor airway south of the airport. The revised Altimeter setting is 30.12" and the OAT at 6000' is -32C. What would be the ground clearance of the aircraft when crossing the 4950 ft ASL ridge south of the Airport?
Answer: Approx. 490'

2. An Aircraft departs Cranbrook airport (3082'ASL) and levels off at 11000' ASL which is the MEA for V303 east of Cranbrook. The revised Altimeter setting is 30.22" and the OAT is -40C. What would be the ground clearance of this aircraft when crossing the 9220 ft ASL mountain ridge east of cranbrook?
Answer: 740ft

gr8_2_av8 · Post by **gr8_2_av8** » Sat Sep 23, 2006 7:22 pm

If I recall
There is 4 feet of alt error per 1000 feet above altimeter source for each degree below isa

I find it helps to draw a diagram

mellow_pilot · Post by **mellow_pilot** » Sat Sep 23, 2006 7:49 pm

It's been almost 6 months, but this is what I have from mine. Sorry for them being vague, I can never remember details from these things. These may be a re-post, I can't remember if I've put them up b4.

How is propeller blade angle controlled in Beta-range?

In a reversible propeller, what prevents the blades from reversing in flight?

What is negative torque sensing?

Know ISA at standard chart heights.

Based on SigWx chart, find height of front.

3 questions on critical point. Definition, calculation. (formula not provided)

Weight/CG shift. (formula not provided)

3 questions on ground de-icing operations. Fluid types, go/no-go decisions.

2 questions on class B airspace. Define, requirements to operate within.

Class C airspace, requirements while operating within.

A/S limitations.

Balanced field length. Definition.

IFR procedures for altimeter setting above 31.00.

Wx at warm front.

Procedure for avoiding ice at a winter warmfront.

Chart question, find MTOW given field length. (have to work chart from 2 directions)

1 GFA question. (find lowest cloud on section of chart)

How does GPS calculate position?

Calculate winds in flight.

IATRA180 · Post by **IATRA180** » Sat Sep 23, 2006 9:35 pm

mellow: Thanks a lot! I can't tell you how much I appreciate it! It helps narrow it down. I just hope after learning those, transport doesnt word the answers in a way that screws me over. I dont even want to count the number of times i've come across their exams and lost marks on a question because of wording..even after RTF2! And they have some stupid system of throwing in the right answers on all of the choices, but their way of looking at it and their common sense doesnt always make perfect sense why they chose that answer! "transport is always right"--- I guess...

Anyways... can anyone else help contribute to some more specific IATRA questions? Thanks again Mellow!

mellow_pilot · Post by **mellow_pilot** » Sat Sep 23, 2006 10:19 pm

No problem. A warning though; there is no garauntee that your exam will be similar. Study what's on the guide and you'll do fine. As far as f-ed up wording, it's something that we all have to live with.

Good luck, and remember, it's only $30. Do-overs are cheap!

Spokes · Post by **Spokes** » Sun Sep 24, 2006 8:59 am

IATRA180 wrote: 1. An Aircraft departs an airport that has an elevation of 2000'ASL and levels off at 6000f ASL which is the MEA for the victor airway south of the airport. The revised Altimeter setting is 30.12" and the OAT at 11000' is -32C. What would be the ground clearance of the aircraft when crossing the 4950 ft ASL ridge south of the Airport? Answer: Approx. 490'

2. An Aircraft departs Cranbrook airport (3082'ASL) and levels off at 11000' ASL which is the MEA for V303 east of Cranbrook. The revised Altimeter setting is 30.22" and the OAT is -40C. What would be the ground clearance of this aircraft when crossing the 9220 ft ASL mountain ridge east of cranbrook? Answer: 740ft

1. Is the temp at 6000' -32C? if this is the case, I get 550'. Pretty close.

2. Using the CR-3 and its manual I got 762', pretty close to your correct answer.

-convert 11000' to pressure alt (-300') and you get 10700'
-on the CR-3 true altitude calculation window line up 10700 with -40C
-Subtract station altitude from indicated altitude (11000 - 3082 = 7918)
-find 7918 on the inner ring of the CR-3 and read true altitude above ground on the outer. I get about 6900'
-Add station altitude again to get ASL (6900 + 3082 = 9982)
-Subtract terrain altitude for the ridge (9982 - 9220 = 762)

Page 13 in my CR-3 manual details this procedure as given above. Hope this helps.

Spokes · Post by **Spokes** » Sun Sep 24, 2006 9:01 am

IATRA180 wrote: 1. An Aircraft departs an airport that has an elevation of 2000'ASL and levels off at 6000f ASL which is the MEA for the victor airway south of the airport. The revised Altimeter setting is 30.12" and the OAT at 11000' is -32C. What would be the ground clearance of the aircraft when crossing the 4950 ft ASL ridge south of the Airport? Answer: Approx. 490'

2. An Aircraft departs Cranbrook airport (3082'ASL) and levels off at 11000' ASL which is the MEA for V303 east of Cranbrook. The revised Altimeter setting is 30.22" and the OAT is -40C. What would be the ground clearance of this aircraft when crossing the 9220 ft ASL mountain ridge east of cranbrook? Answer: 740ft

1. Is the temp at 6000' -32C? if this is the case, I get 550'. Pretty close.

2. Using the CR-3 and its manual I got 762', pretty close to your correct answer.

-convert 11000' to pressure alt (-300') and you get 10700'
-on the CR-3 true altitude calculation window line up 10700 with -40C
-Subtract station altitude from indicated altitude (11000 - 3082 = 7918)
-find 7918 on the inner ring of the CR-3 and read true altitude above ground on the outer. I get about 6900'
-Add station altitude again to get ASL (6900 + 3082 = 9982)
-Subtract terrain altitude for the ridge (9982 - 9220 = 762)

Page 13 in my CR-3 manual details this procedure as given above. Of course none of this explaians why these MEA's are less than 2000' above terrain in a mountainous region. But thats another story I suppose.

Hope this helps.

Grey_Wolf · Post by **Grey_Wolf** » Sun Oct 29, 2006 11:10 am

Firstly I downloaded the study/ref guide from TC. Then I read both "The Turbine Pilot's Flight Manual" and "Fly the Wing" in preparation for the IATRA. The former was much more useful than the later. Also, I worked through AeroCourse's ATPL Workbook and found many of those questions similar (and some exact) on my IATRA. Especially in the later sections such as Peformance, Weight & Balance, Flight Operations, Human Factors.

Another source was the thread "questions from the IATRA" by "heeypilot" (see link below) who gave a list of the questions (43 of them) on his IATRA.

http://www.avcanada.ca/forums2/viewtopi ... ight=iatra

aileron · Post by **aileron** » Sun Oct 29, 2006 2:15 pm

Group tendencies can indicate weak areas (the lower end of the bell curve); This might help with concentrated study: TC Guide of Weak Knowledge

For the clearance question: 1000' column of air above the altimeter source is affected by non ISA conditions 4ft per 1 degree C difference (from ISA). Therefore: 6000-2000 = 4000 above source. 4000/1000 is 4. Temperature is -32 at 6000' which is 35 degrees colder than ISA. So 4 x 4 x 35 is 560 feet low. The ridge is 4950 ASL, our true altitude is 5440 ASL (6000' less 560') the difference is 490'.

navajo · Post by **navajo** » Mon Oct 30, 2006 1:01 pm

I did the IATRA on oct 26. 84 %, I am really glad!

Here a list of the subjects I had wrong:

. How Rime ice is formed
. Alcool : It is best to allow at least 24 hours between the last drink and takeoff time, and at least 48 hours after excessive drinking.
. When deicing an airplane, what should be deiced first? (I answered the tail...)
. Balanced field length: http://www.tc.gc.ca/AviationCivile/publ ... nts/A2.htm
. Describe reverse propeller security features
. What is viscous hydroplaining
. 3 bars VASIS and wheel height,.... shame on me! I think I did a mistake with upwind and downwind...

I would say that 80 % of the IATRA could be answered with the AIM.

Hope it help.

Grey_Wolf · Post by **Grey_Wolf** » Mon Oct 30, 2006 5:38 pm

edited as per CAR 400.02

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Re: ANY RECENT IATRA WRITERS?

Re: ANY RECENT IATRA WRITERS?