For RAIM you need 5 satellites or 4 satellites + baroaiding (barometric altitude information is linked to GPS) and for FDE (Failure detection and exclusion) you need 6 satellites for 5 satellites + baroaiding.

in this thread some1 had said that there questioned asked about gaya approach, so can someone tell me if (APPROACH PLATES | Aviator Flight) is a good site to refer these appraoches or are there any better sites that i refer for these approaches? and where do i look up for the symbols those are shown on approach plates...thnx

@uniform,
check this India IFR charts [Archive] - PPRuNe Forums
i hope it helps.

@bayblade
Thank you :)

Great thread, whats the best way to prepare for radio aids orals? This will be my first attempt.

Greetings !

Slightly off topic, but has any one ever successfully tried getting their ATPL Oral exam dates changed ?

If yes, what is the procedure ?
Any input will be appreciated.
Thanks.

So guys what was asked today updates please ....

Ok mine was pathetic they got into charts and were like you need to know those jep charts very well
Navigation what of parallel of latitude what are thumb lines gc
Dint seem satisfied with answers
Then what is em waves define properly and all
What are vor errors
what is dead space
what is duct propogation I suppose
Not sure

Then free advise
Beta you have lots of time study more
We want to test in depth knowledge
You can pass written by fluke but here is different and all
I would guess I dint pass
So I think ill I have yo figure some way now :(

either ways really appreciate your help...can u please tell me what all he asked u from jeppeson charts...
...really wishing to see more questions from all...

Jeppessen related Question.
 

Hello fellow Aviators!

I am still trying to figure out what does the symbol right on top of an Approach plate stands for... It basically has a small globe with two wings on it. It is also not found on all approach plates and is similar to the symbol found along with 'magnetic north' indicator on the approach chart....

Any help would be highly appreciated!!

Cheers!! :ok:

gr8 going !!
 

hey guys ...
good to see some activity around here :sad:
i got my VIVA on 14 in mumbai keep on updating .... :ok:

n good airmanship :D

@ KP747
if u see "NOT TO SCALE" below that globe with 2 wings....to my knowledge it just means that it is non conformal, that is not to be scaled.....this is generally seen in SIDs and STARs......

Hey guys, i am really wishing to see more of jeppeson questions , exactly what all they ask and from which all charts, and definitely the remaining topcs as well...thanks guys..

Speed on DME Arc
 

Isnt it 220 Kts.
AIP states speed within 15 Nm of Air below 10000ft is 220

i was assuming max speed below 10000ft is 250 kts, however i am nt sure on tht , so dnt go by me,,,

DME ARC

Aircraft category--------Speed Range(kts)

A <91---------------------90/150
B 91/120 ---------------- 120/180
C 121/140----------------160/240
D 141/165----------------185/250
E 166/210----------------185/250

a friend of mine gave his orals in mumabi 2 days back he was asked to derive the MEHT( minimum eye height over threshold)? he dint have any clue how to find tht, neither me, i am guessing some 1 in 60 rule applies where may b the angle might b 3degs, n add a 50ft, or smthng lyk tht...som1 who knws how to do this...please help...thanx

Nav VIVA Apr 2012 Questions
 

Started with basics questions on definition of Course, Track, Hdg

DME Arc - How to calculate the approx distance to touchdown

Approach Chart / STAR / SID
There was a chart that was for some airline / operator specific. Can some one help in finding out what all are the symbols used for various airlines / operators.

Lots of Mental DR questions gain time / speed reqd

Airspace Classifications- what about SAR in these air spaces- Need help on this

SLOP

Can someone tell about uncontrolled airspace. It is given at many places that in In India there are no uncontrolled air space. But I remember during RTR classes lots of time uncontrolled airspace was mentioned during routing.

where all other than aviation are Lambert charts used.

Given two longs on equator (Not diametrically opposite). What track to follow if they have to meet reciprocal at the poles. Anyone any idea on this.

RVSM reqmts - what are the figures for difference between the altimeters, Altitude hold / warning. DGCA CAR gives different figures on diff pages. Reqmt of TCAS-is it there or just recommended. The

Questions on notes on a Apch Chart. Don't answer without looking at the chart even if it is too obvious an answer. As far as I know, if the controller tells you to do something then it is understood that he is in control and doing so depending on the traffic But I think he expected me to look at the chart and readout the note.

ETOPS, who has to approve and why? Definition. Emphasis on nil winds and single engine cruise speeds. He kept hinting on what are the environmental factors that are affecting.

Answers and clarifications on the above will be appreciated.

VIVA Mumbai
 

Arent there any inputs from people appearing at Mumbai

Minimum eye Height over threshold is the Threshold Crossing height from pilots eye to the ground (its a self explanatory definition but)
To put it in a simple way,


Aircraft like A320 have a minimum wheel clearance of 20 feet(from Wheel to threshold)....1

From pilots eye to wheel is know in the FCOM which is 24ft in A320.....2

MEHT is basically Point 1 + Point 2 which is 45 feet

if the MEHT/TCH is less than 45ft the aircraft will not have adequate clearance
hence the A320 in that case cannot use PAPI.

DME Arc - How to calculate the approx distance to touchdown

If you are on a 15 DME arc on radial 300 and final approach course is 090 (along 270 radial) then approx distance to touchdown=length of DME arc + final approach distance = { [ 15 x (300-270) ] / 60 } + 15 = 22.5 nm

length of arc = (pi * r * theta ) / 180 = r * theta / 60 appox

Airspace Classifications- what about SAR in these air spaces



CAR Section 9 Series E Part 1.


2.6 Classification of airspaces

2.6.1 ATS airspaces shall be classified and designated in accordance with the
following:

Class A. IFR flights only are permitted, all flights are provided with air traffic
control service and are separated from each other.

Class B . IFR and VFR flights are permitted, all flights are provided with air
traffic control service and are separated from each other.

Class C. IFR and VFR flights are permitted, all flights are provided with air
traffic control service and IFR flights are separated from other IFR flights and
from VFR flights. VFR flights are separated from IFR flights and receive traffic
information in respect of other VFR flights.

Class D. IFR and VFR flights are permitted and all flights are provided with air
traffic control service, IFR flights are separated from other IFR flights and
receive traffic information in respect of VFR flights, VFR flights receive traffic
information in respect of all other flights.

Class E. IFR and VFR flights are permitted, IFR flights are provided with air
traffic control service and are separated from other IFR flights. All flights
receive traffic information as far as is practical. Class E shall not be used for
control zones.

Class F. IFR and VFR flights are permitted, all participating IFR flights receive
an air traffic advisory service and all flights receive flight information service if
requested.

Class G . IFR and VFR flights are permitted and receive flight information
service if requested.

2.6.2 Airspace classes have been classified in AIP India ENR 1.4.


Search and Rescue

AIP India 6th Edition Gen 3.6


2. Area of responsibility

2.1.The Search & Rescue service is responsible for entire India territory including territorial waters as well as airspace over high-seas encompassed by Chennai, Kolkata and Mumbai FIRs.

RVSM reqmts - what are the figures for difference between the altimeters, Altitude hold / warning. DGCA CAR gives different figures on diff pages. Reqmt of TCAS-is it there or just recommended.



8 AIRCRAFT SYSTEMS:

8.1 The aircraft shall be equipped to meet the following minimum equipment
for RVSM operations:

8.1.1 Two independent altitude measurement systems shall be installed.
Each system shall be composed of the following elements:
a) Cross-coupled static source/system, with ice protection if
located in areas subject to ice accretion;
b) Equipment for measuring static pressure sensed by the static
source, converting it to pressure altitude and displaying the
pressure altitude to the flight crew;
c) Equipment for providing a digitally encoded signal
corresponding to the displayed pressure altitude, for automatic
altitude reporting purposes;
d) Static source error correction (SSEC)/Position Error Correction
(PEC), if needed to meet the performance criteria of paras 3.3,
3.4 or 3.6 of Annexure II attached, as appropriate; and
e) Signals referenced to a pilot selected altitude for automatic
control and alerting. These signals will need to be derived from
altitude measurement system meeting the criteria of this CAR,
and in all cases, enabling the criteria of paras 8.1.3 and 8.2.6 to
be met.

8.1.2 One secondary surveillance radar transponder (meeting TSO C112
standards) with an altitude reporting system that can be connected
to the altitude measurement system in use for altitude keeping.

8.1.3 Airborne Collision Avoidance System (ACAS II) (meeting TSO
C119b standards) to improve the safety level of flights operating
within RVSM airspace.

8.1.4 An altitude alerting system that alerts the crew aurally and visually if
displayed altitude deviates from the selected altitude by more than
± 300 feet (for aircraft for which application for type certification was
made on or before April 9, 1997) or ± 200 feet (for aircraft for which
application for type certification is made after April 9, 1997).

8.1.5 An automatic altitude control system shall be required which shall
be capable of controlling altitude within tolerance band of ± 15
metres (± 50 feet) about commanded altitude, when operated in the
altitude hold mode in straight and level flight under non turbulent,
non gust conditions.


ACAS II is required.

Given two longs on equator (Not diametrically opposite). What track to follow if they have to meet reciprocal at the poles. Anyone any idea on this.

Say given longitudes are 070 E and 050 E. If you fly due north or south you will reach the north or south pole respectively. And at the poles all the longitudes (meridians and anti meridians) meet. So if you fly due north or south along any longitude you will meet the reciprocal of any longitude at the poles.

Meeting reciprocal at poles
 

Wont in the above case the tracks meet at an angle of 20 deg (convergency) How do we make them meet at 180 deg to eachother. That was the question.

SAR Airspace
 

Question was what are the restrictions or considerations for SAR in these airspaces. I presume there should not be any restriction as when SAR is activated the entire airspace / traffic is adjusted to accommodate them Can anyone clarify this.

Symbol on approach plate
 

Refer

I am still trying to figure out what does the symbol right on top of an Approach plate stands for... It basically has a small globe with two wings on it. It is also not found on all approach plates and is similar to the symbol found along with 'magnetic north' indicator on the approach chart....

Any help would be highly appreciated!!


was the symbol similar to

Google Image Result for http://www.dae.mi.th/aero-update/image/iata_logo.jpg

Pl look at the top centre where the chart no. is written. If it is bold [ on the left instead of oval then it means that the chart is meant for some specific operator. Maybe the small globe with wings is for some operator. If a M is written on the right it means Metric scale.

Can someone give link to various operators ensigns. this was asked to me even last time. I thought it was Air India then but couldnt find out whom it belonged to.

Meeting reciprocal at poles
 

They have to follow any rhumb line track, in opposite directions: example, A is at 20E, B is at 50E, A should fly 330 and B should fly 030, if a is flying 300 then B should fly 060. they ll meet on reciprocal tracks at the pole.
Correct me if m wrong.

Meeting reciprocal at poles
 

But if they are traveling Rhumbline tracks that are reciprocal then wont they end at the reciprocal poles instead of meeting at one pole (If at all the track reaches at the pole). Will any Rhumbline track ever reach a pole unless it is in a direction of 360 or 180 theoretically.
Aren't all directions to / from a pole either 360 or 180?

they are not departing on the reciprocal tracks. They are departing on the equal and opposite angle from the 000 or 180 directions. and will meet up at poles, that too at reciprocal heading.

@ greatdanemike, once the roll no is issued..then the attempt is counted no matter u give it or not...

Hey guys gave my Radio Aids ATPL orals yesterday in Chennai.

First thing he did was pull out an IFR chart and asked me a few questions about symbols, etc. IFR plates, asked me lot of questions and then asked me how I would do a CANPA approach using the chart.

Questions asked were

AWR - principle and explain
Secondary Radar
Machmeter, why is it required, explain the functioning.
Compass errors
What is an ADC and how does it work ( inputs, outputs etc)
What is EPR and explain why it is used

hey guys!
i had my oral today for radio as well as for nav......
its was pretty easy......quite general stuff.....in nav dey might ask u stuff frm projections, app plates, enroute charts......ETOPS for sure, min fuel reqired for jets, diff between alternate n suitable aerodrome, don't forget to do performance related topics sch as C.G position effects on range, wn shud u report ATC ( variation frm filed TAS, change in ETA at fix etc.).......effect of wt on glide .......a/s req for max glide), type of projection on enroute chart.....etc
Don't 4get to do performance n flt plannin que.

For radio...its pretty basics bt u shud be clear abt funda's......hw actually things work.......dey might ask u sumthin out of da box bt if u apply little logic u wud b able to ans dose! they won't cover mch abt auto systems, engine insruments n ol...!!

All da best to u guys!! :ok:

for radio aids (in mumbai) they asked a few very basic things like the VHF communications range, ACRAS frequency, attenuation in the atmosphere, explain with diagram servo altimeter working, errors of altimeter, duct propagation and multi hop propagation.
@gamble thanks for your answers.:)

hello guys
does anyone know about the jepp book which seems to be circulating which has stuff related to charts and plates etc.
where can we buy that or copy it or pdf

Glossary Legends, this should help u fr the legend part

ppl who gave their atpl orals on 18th and 19th, i have a request...please share the questions those were asked to u...i have my orals on 22nd...really appreciate if cud help me and others who are expecting like me...thnx

@daniel after you clear your exam. the 1st oral attempt is mandatory and rest of the 2 attempts you can give in any session within 2 years.

I am giving my 2rd attempt tomorrow at delhi center for gen nav.
any help regarding current questions what are examiners asking would be appreciated.

Hi, I gave Radio Nav in oct 2011 attempt. But could not attend the 1st oral which is mandatory.
After that I did not apply for oral.
Now can I apply for oral or do I have to give exam again ?