Transition level in India

[LMX]

Can anyone operating into e.g. Delhi/Mumbai or acquainted with ATC there tell me how they calculate the transition level? They have a TA of 4000 ft, yet on some procedures (published in various AIP Supplements (http://www.aai.aero/public_notices/aip_supplements.jsp)) all levels are depicted as altitudes in feet (in some cases as high as 25000 ft!).

[BelArgUSA]

If you have a TA of 4,000 feet / your transition level should be normally expected at FL050 or 060. Look on the airport approach plates.
xxx
:8
Happy contrails

[LMX]

I'm the guy who makes the approach plates. ;)

The TL is calculated by ATC, but the authorities have managed to publish some procedures with feet all over (no flight levels even at high levels), and our policy requires us to publish the charts like this unless we can get confirmation where it should actually be flight levels. And the Indian authorities are difficult to get in touch with...

[BelArgUSA]

LMX... all I can write is ¿?¿?¿? -
xxx
If I would fly these procedures, I would follow the TL given by ATC.
Regardless of... published 25,000 QNH (!) - I would call that FL 250.
For me, a TL is generally 1,000, at worst 2,000 feet above TA...
You should have a "friendly talk" with the Indian DGCA.
Ask them if they want another 747 to hit a Russian airplane in mid-air...?
I have no recommended insults you should direct at them...
xxx
:eek:
Happy contrails

P.S. Since you publish these charts, would recommend you print clearly -
"Transition LVL* per ATC" in super large font...
And add an asterisk * after each such published altitudes...

[Bullethead]

Maybe as you get closer to the Himalayas the transition altitude gets up a little and could quite well be over 25,000'. There more than likely are several different TAs and TLs.

I just had a quick look at the Indian AIP and infact there is a list of the different transition altitudes and they range from 4,000' to 23,000'

Have a look here, fourth page,

http://www.aai.aero/public_notices/ENR_1.7_-_Altimeter_setting_procedure.pdf



Regards,
BH.

[LMX]

I should perhaps have clarified that this concerns Sups 32-34 2008 only, i.e. procedures for VIDP, VABB and VAAH. All other procedures published for these airports show flight levels above the TA, as one would expect.

Nobody here flying to India who can tell me what TL they give you with a certain QNH?

[rknegi]

Transition altitudes in India are determined based on the airfield elevation and highest obstruction within 25 miles with safety margin thrown in. We have a terrain that is far more diversified than US. With peaks in excess of 26,000 ft and airfields at 18,000 ft. The system has been designed that best suits our requirements.
There is no need to be rude and derogatory about the Indian airspace control and regulatory body. But then that's typical US arrogance speaking! US has had more than its share of midair accidents.

[White Knight]

It's really not difficult LMX.. TL is on the ATIS (if you can get it being India:ugh:) but the controllers will clear you to an altitude and when they do that they give you the TL verbally....

"Descend altitude 5000' QNH1009 Transition Level 95" for example... Easy:} Don't worry about flying into Srinegar - you're unlikely to have to do that!!!

[Gulfstreamaviator]

I do remember climbing towards the runway, to land.....

I assume that the 1011, does not require a TL for this approach......

In my citation 2 full power to make the "approach climb"

glf

[LMX]

Eventually we got in touch with the Indian authorities who confirmed that levels above TA should be treated as flight levels.

Problem solved! :ok:

[rafiqkhanj]

hi everyone,
i want to know how TA is calculated in india with respect to height of obstructions in 25 NM