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Mike away/awave LHR?

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Mike away/awave LHR?

Old 16th Jan 2013, 12:05
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Mike away/awave LHR?

Hi guys,

I just been asked by a friend why BA pilots always request this kind of approach for Heathrow? Not even sure if the typo is correct.

I couldn't find anything in the charts.

Last edited by HHI OPS; 16th Jan 2013 at 12:18.
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Old 16th Jan 2013, 12:35
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It's Microwave (Microwave Landing System), a landing system that was originally developed and intended to replace ILS or at least supplement it.
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Old 16th Jan 2013, 12:40
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I'm nothing to do with Heathrow but I would guess they're asking for a microwave (MLS) approach.
 
Old 16th Jan 2013, 13:51
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Thanks!

Just found the answer in the www.
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Old 16th Jan 2013, 13:52
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Here's an example of an MLS approach chart for LHR:

http://fly.rocketroute.com/plates/ad...6554&icao=EGLL
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Old 16th Jan 2013, 15:00
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why BA pilots always request this kind of approach
Minor point but FWIW "they" don't always request it since most of the BA Fleets don't have MLS installed/operational . The only BA Fleet routinely using MLS is the Airbus.

Last edited by wiggy; 16th Jan 2013 at 15:02.
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Old 16th Jan 2013, 15:12
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British Airways and NATS intend to implement the third phase of MLS operations at LHR. This reduces the spacing between aircraft flying an MLS approach in LVPs by one mile. As part of the rollout, ATC needs to be confident that MLS-equipped aeroplanes will, in practice, fly MLS approaches.
In particular, the Heathrow Directors (who set the arrival spacing) have no indication of MLS capability on their flight progress strips. Hence, without asking, they do not know if an aeroplane is MLS-capable unless or until the crew asks for an MLS approach, and even if so equipped they cannot be confident that the planned spacing will be possible between the aircraft.
All flight crew and ATC need to have shared confidence that all MLS-equipped aircraft can and will fly an MLS in all weathers so that it becomes a fully ‘normal’ procedure. If ATC cannot be confident that that all MLS-equipped aircraft will fly the MLS without individual requests, they will not be able to apply the reduced spacing on final approach that only MLS can safely support.
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Old 16th Jan 2013, 16:01
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If only the same (ILS) phraseology applied for clearing an aircraft for an MLS approach! If it were the same, ATC really wouldn't care whether it was an ILS or MLS and the BA pilots could stop cluttering the frequency with their requests!!

Only then during low vis. procedures would the pilots really need to let us know what type of approach they intend on flying (for spacing purposes).
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Old 19th Jan 2013, 00:51
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why keep MLS operational at LHR

I would have expected the system to be defunct by now anyway.

So what are the economic benefits for MLS at LHR.

The bean counters need to know.

Glf
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Old 22nd Jan 2013, 13:49
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If it were the same, ATC really wouldn't care whether it was an ILS or MLS and the BA pilots could stop cluttering the frequency with their requests!
This would be great until we need to turn one or the other off (or downgrade) for maintenance, or worse one fails unexpectedly and we have no idea who is flying which approach.

Not fail safe I'm afraid.

So what are the economic benefits for MLS at LHR.
Equals:

British Airways and NATS intend to implement the third phase of MLS operations at LHR. This reduces the spacing between aircraft flying an MLS approach in LVPs by one mile.
Capacity.
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Old 23rd Jan 2013, 03:53
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Also, the procedures we develop for MLS phase 3 will be identical to those we will use when eventually other approaches such as GBAS can be used for CAT III approaches.
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