Airliners.net

stephen88

Anti-Ice Systems

I'm currently studying for ATPL exams and I just need some clarification on a few things... I understand that an airliner (737/A320) engine anti-ice systems need to be switched on around +10oc and in visible moisture, the question I ask myself is how can ice form at +10oc? Is the reason that ice can...

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stephen88

Re: Pitot-Static Tubes

The advantage of the pitot-static probe is that it co-locates the dynamic & static measurements at nearly the same point in space, so they measure the same flow condition. With separate ports on the fuselage, you could get measurements that represent different points in space and flow condition...

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stephen88

Pitot-Static Tubes

Can someone explain why a pitot-static tube would be used instead of a conventional pitot tube? The conventional pitot tube measures total pressure and sends this to the ASI, the static pressure from the static ports on the side of the aircraft is then fed to the ASI and whatever the static pressure...

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stephen88

True Altitude

If an aircraft is flying from a area of high pressure to low pressure at a CONSTANT indicated altitude on the altimeter but your true altitude is decreasing, how is this so? The only way that your indicated altitude can be constant whilst true altitude is decreasing is if the pilot doesn't change QN...

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stephen88

Re: Airbus MCDU

Very informative responses everyone, thank you for taking the time to explain it all

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stephen88

Re: Airbus MCDU

Thanks for all your replies everyone, that clears it up

Does anyone know why then the MCDU doesn't ask for winds, QNH, temperature on the takeoff performance but then allows you to enter this information for the approach/landing phase?

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stephen88

Airbus MCDU

I’ve noticed that on the Airbus MCDU when calculating the V1, VR and V2 speeds for take off there is nowhere to input the airport QNH, temperature and winds which all effect your take off speeds, how comes the MCDU doesn’t give you this option to input this but it does for when calculating approach ...

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stephen88

Re: Why do pilots do 'Wheelies' after landing?

Touchdown is ALWAYS on the mains, lower nose gear smoothly to the runway. That’s not “doing a wheelie”, that’s landing. Aero braking is mostly a fast jet deal where there are no thrust reverser or drag chutes and not very effective for airliner operations. The video landing is pretty normal, perhap...

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stephen88

Why do pilots do 'Wheelies' after landing?

I've seen this happen a few times recently when pilots have landed with only the main landing gear on the runway. They seem to hold the nose wheel of the runway for a while... Why do they do this? I heard people say 'Oh the pilots doing a wheelie', is it just showing off or is there a valid reason? ...

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stephen88

A320 battery switches

I’ve seen on videos online the startup process on the A320. I notice the first buttons pressed whilst cold and dark are the battery 1&2 switches, now I understand these need to switched on the enable the APU to be started (Is this the only reason?) But what I don’t understand is why does the bat...

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stephen88

A320 Localizer & Glideslope antenna's

On the Airbus A320 I understand that both the Localizer and Glideslipe antenna's are located within the Radome/Nose of the aircraft, are the below locations correct? On the B737NG the Glideslope antenna is located right at the top of the forward pressure bulkhead but from pictures I've seen of the A...

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stephen88

A320 antenna locations

From the image...

Are these correct? And can you fill in the unknowns?

Many thanks.

1. VHF1
2. SatCom
3. VHF2
4. VHF3
5. ???
6. ELT
7. ???

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stephen88

Approach Ban

Now from I understand from the approach ban is that if the RVR at the airport you've commenced an approach at fall below minimums... If above 1,000ft, don't descend below this, below 1,000ft, continue until the missed approach point. If I was above 1,000ft, do I have to stay at 1,000ft until the MAP...

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stephen88

Airspace in the UK

Hello, I'm trying to understand the UK airspace classes and getting a bit confused. https://stephenthepilot.files.wordpress.com/2017/04/class_a.jpg On a UK VFR chart above, correct if I'm wrong but this says the LTMA class A starts at 5,500ft and the WORTHING CTA class A starts at Flight level 75, o...

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stephen88

Screen height 35ft, where is it?

The screen height of 35ft that a jet must be flying at when at the V2 speed, where is this imaginary screen, is it at the end of the runway or clearway (TODR)?

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stephen88

Re: Are these vortilons on the 737 wing?

Must be the angle.You can clearly see them in this photo: I've got an easier explanation: you can totally see them in Stephen8's OP WS photo, but they happen to be the exact same color as the terrain below. Enlarge that photo and look real close. The vortilons are totally installed right there. I f...

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stephen88

Are these vortilons on the 737 wing?

Just below the leading edge near the tip of this Ryanair 737 wing, the 3 flat plates look like vortilons, is this correct? https://stephenthepilot.files.wordpress.com/2016/08/b737wingvortilon.jpg This KLM 737 seems to have them as well... http://www.myairtrips.net/wp-content/uploads/2012/03/IMG_3116...

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stephen88

What are these small thin edges on the Boeing 737-800 wing?

I've noticed that they're not on all 737-800 wings, I've only seen them on Qantas and Garuda Indonesia aircraft.

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