Ground School Exam Questions & Question Banks

[Cron]

Small nav Q

Would be most grateful for the steps to the solution of this. Thank you in advance for your help.


An aircraft is tracking 270°M at ground speed 180kts. At 1000 hrs, an airfield bears 358°M. At 1006 hrs, the same airfield bears 004°M. Using the 1:60 rule, estimate your range from the airfield.
a) 090
b) 180
c) 720
d) 360

[Alex Whittingham]

You've travelled 18NM and the bearing has changed by 6º. This means each degree = 3NM. At 60NM 1º = 1NM, for 1º to be equal to 3NM you must be three times as far away, 180NM. How did I do?

[Cron]

Thanks A, I was hoping for a formula, I like formulae. But thank you anyway.

[mcgoo]

Originally Posted by Cron

I was hoping for a formula

question + alex@BGS = answer

[BobC]

Cron

Here's a formula, but you really should be able to work out the answer from a knowledge of the 1-in-60 rule (on which the formula is based).

Distance = grounspeed x time for bearing change (min)/bearing change (deg)

In your example, distance = 180 x 6 min/6 degrees = 180 nm

Bob

[JUST-local]

rnav question

Hi all

I am booked in to sit the atpl rnav paper (and others) next month!

I am on a full time course and have just started looking at feedback which is provided by the school and other sources.

Anyway enough fluff.....

Q. The receiver aerial for a NAVSTAR/GPS system should be mounted?

My training providers answer.
In the vicinity of the receiver to avoid long transmission lines.

The answer given on a well know website.
On the upper side of the fuselage in the vicinity of the centre of gravity.

I have read around the subject and my training provider has explained their answer. can anyone tell me which is the definitive answer and why?

Thanks

[G_STRING]

Any definitive list of CPL/ATPL calculations?

With regard to the CPL/ATPL theoretical subjects:

Is there a defintive list anywhere, which details all or most of the calculations you have to do within each subject.

In MET For example:
At a certain position, the temperature on the 300 hPa chart is -48°C; according to the tropopause chart, the tropopause is at FL 330. What is the most likely temperature at FL 350

I know that there are various question banks available, but what I'm looking for is the format of the calculations so the syntax can be learnt in order to answer the given questions. (A bit like leaning how to manipulate formulae in algebra)

[matt_hooks]

Originally Posted by JUST-local

Q. The receiver aerial for a NAVSTAR/GPS system should be mounted?
My training providers answer.
In the vicinity of the receiver to avoid long transmission lines.
The answer given on a well know website.
On the upper side of the fuselage in the vicinity of the centre of gravity.

I would say that upper side of the fuselage in the vicinity of C of G is correct. I would be interested to hear your providers justification for their answer!

[BEagle]

1. "At 1000 hrs, an airfield bears 358°M. At 1006 hrs, the same airfield bears 004°M."

Basic sine rule (used to be taught at 'O' level) :

(a/sinA) = (b/sinB) = (c/sinC)

Here, A = 86°, B = 6°, C = 88° and b is 18 nm (6 minutes at 3 nm per minute).

Thus a = 18 sin 86° / sin 6° = 171.78243 nm, so at 1000 the aerodrome was 171.78243 nm away. Similarly, at 1006 it was c = 18 sin 88° / sin 6° = 172.097 nm away. Dropping the perpendicular from B to AC at D gives the closest point of approach to the aerodrome CD as 171.78243 sin 88° = 171.67778 nm; this occurred at 171.78243 cos 88° = 5.9951203 nm travelled after 1000 hrs, i.e. at 1 min 59.54144 minutes after 1000 when the aerodrome was due North.....

Assuming a flat earth, that is......


Or about 180 nm away!

2. As for the GPS antenna question, the answer which provides the optimum view of the sky is best. So, it has to be on an upper surface; proximity to the receiver is not particularly crucial provided that cable attenuation limits are observed. Time difference between signal arrival at the antenna and at the receiver can be compensated for, but since that will be the same for all satellites seen and it is only the time differences which matter, it isn't that important. But the antenna velocity needs to be the same as the vehicle velocity, so if you put a GPS antenna at the wingtip and rolled rapidly, it would get a bit confused, I would guess. So, all-in-all, I would go for upper surface close to the centreline - to eliminate errors induced by high pitch rates then yes, close to the CG will probably be optimum....

Upper surface, on the centreline and as close as possible to the receiver to reduce attenuation losses in the downlead would be my answer.

3. Met - I really hate met. But 300 hPa at ISA is roughly FL300, the ISA lapse rate is about 2 deg per 1000 ft to the trop and constant above, so my guess would be -48 -6 = -54 deg both at the trop and at FL350.....

(Or, for metric people, 33000 ft = 10058.42 m, 300 hPa = 30065 ft = 9164 m and the lapse rate is 6.5 deg per km. So at FL330 it would be 0.89442012 x 6.5 = 5.813 deg cooler, i.e. -53.8 deg C.)

[alberto86]

OAT ATPL question bank

hi all,

I'm thinking of buying the official OAT ATPL question bank CDs. Is some of you using it ? Are questions the same as in the ATPL examinations or are they different? thank you

[JetSetJ]

Buon Giorno

The Oxford CD is OK, but it is quite dated!! My recommendation would be to spend £50 on gaining access to the Bristol question bank, it's fantastic!!!! I have sat 7 of my JAR's and found Bristol to be top notch, it gave me so much confidence when i actually sat the exams - which i think is pretty important!!

Remember your attitude determins your altitude!!! If you think you can't, you won't. If you think you can, you will

The £50 allows you 3 months access to their database.

Hope this helps!!

Ciao

JetSetJ

[potkettleblack]

I brought the CD and found hardly any questions in the current exams at all. The BGS on the other hand was superb. Just make sure you time the subscription to coincide with your first sitting so it doesn't run out when you need it most.

[Waryhawk]

I'm also giving a thumbs up for the Bristol online question bank, the format of the questions is more realistic as to what you'll get in the actual exams. I also have the Oxford CD and don't rate it as high as BGS.

[Cron]

Small Nav Q

Would be most grateful for why the answer to this is (a) and not (b). Some explanation as well would be very much appreciated.

Thank you in advance.


An a/c is over position A (55 30N 060 15W), where B VOR (53 30N 060 15W) can be received. The Mag var is 31W at A and 28W at B. What is the radial from B?
a) 028
b) 332
c) 031
d) 208

[Kanu]

Because when getting a radial from a VOR you only use the variation at the VOR?


EDIT: The A/C is 360 true... The VOR is south of the A/C with 28 deg var west putting true noth to the northeast of the VOR's position. It's much easier to draw it out than it is to type it sorry

[cantw82fly]

alternative ATPL question bank

I've found an online question bank at [URL="http://www.aviationexam.com"]It claims to have 14,000 questions and costs 50 euros for 2 months or 120 euros for 12 months (all subjects) or cheaper for individual subjects.
It's run from The Czech Republic.

Anyone had any experience with it? Are the questions up to date?

Any feedback gratefully received.

[Noiseboy]

I have been using it during my exams, for the 10 I have taken so far my average is 96% so there must be something good about it! If a question looks wrong or badly worded it is possible to leave comments and they are either updated or a reason given for the answer so the questions tend to be up to date. I also like the study progress section where you can see which areas need extra revision.

[airyana]

from my experience the Bristol QB is excellent as well.

[cantw82fly]

Thanks for info.

I'm already using the Bristol questions. Just thought I might broaden my horizons a little.

After all - it's only (more) money!!!!

[JetSetJ]

Hi there

Just a quick question for you guys who have utilised the Bristol QB. In your opinion whats the feedback like for subjects such as radio nav, gen nav, mass and balance, performance, flight planning,air law and ops??

Regards

JetSetJ