Engine Pylon Query

The arrow is pointing to an echaust area for bleed air pre-cooling. The extracted bleed air is normally cooled to 200 degrees C (sometimes 150 degrees under certain conditions) prior to being routed inside the wing structure and that is where the excess temperature is vented overboard. I would imagine the colour change is due to the temperatures involved.

Dam , wys after his free vacations at TLS knows evrything about A34x 😉

Thanks for the info.

The arrow is pointing to an echaust area for bleed air pre-cooling. The extracted bleed air is normally cooled to 200 degrees C (sometimes 150 degrees under certain conditions) prior to being routed inside the wing structure and that is where the excess temperature is vented overboard. I would imagine the colour change is due to the temperatures involved.

Dam , wys after his free vacations at TLS knows evrything about A34x 😉

Thanks for the info.

fascinating!

fascinating!

The arrow is pointing to an echaust area for bleed air pre-cooling. The extracted bleed air is normally cooled to 200 degrees C (sometimes 150 degrees under certain conditions) prior to being routed inside the wing structure and that is where the excess temperature is vented overboard. I would imagine the colour change is due to the temperatures involved.

The arrow is pointing to an echaust area for bleed air pre-cooling. The extracted bleed air is normally cooled to 200 degrees C (sometimes 150 degrees under certain conditions) prior to being routed inside the wing structure and that is where the excess temperature is vented overboard. I would imagine the colour change is due to the temperatures involved.

Perhaps it’s due to a portion of the anti-ice system running? I don’t know why it would be on during clear conditions so it’s only a guess.

Perhaps it’s due to a portion of the anti-ice system running? I don’t know why it would be on during clear conditions so it’s only a guess.

During the flight the flies get smashed on it. After the plane lands and stops at the gate the flies fall off. 🙂

During the flight the flies get smashed on it. After the plane lands and stops at the gate the flies fall off. 🙂

Hi all,

The last few times I have flown on an A340 I have noticed that one of the top panels on the engine pylons seems to turn black during flight, returning to a metallic colour when back on the ground. Is there any reason for it doing this or is it just because of different light refractions whilst in the air?

Thanks,

James

Was it BEFORE or AFTER a couple of drinks? 😉 :diablo:

Hi all,

The last few times I have flown on an A340 I have noticed that one of the top panels on the engine pylons seems to turn black during flight, returning to a metallic colour when back on the ground. Is there any reason for it doing this or is it just because of different light refractions whilst in the air?

Thanks,

James

Was it BEFORE or AFTER a couple of drinks? 😉 :diablo:

I’m sure it can’t only be specific to the A340, but I haven’t flown on any other type for a while.

I’m sure it can’t only be specific to the A340, but I haven’t flown on any other type for a while.

Bizarre…

Have you only noticed this on the A340 MerlinXX?

I’ll be flying on an A320 for my Christmas break so I’ll keep an eye for any such occurrences…

Bizarre…

Have you only noticed this on the A340 MerlinXX?

I’ll be flying on an A320 for my Christmas break so I’ll keep an eye for any such occurrences…

airbuses do a lot of strange things. LOL

Perhaps its just the effects of the extreme cold (-40c on average) and the light?

airbuses do a lot of strange things. LOL

Perhaps its just the effects of the extreme cold (-40c on average) and the light?