Trailspotter
Senior Member.
While following the evolution of an usually shaped trail (the bottom one, just above the roof), I have taken a picture of an ordinary linear contrail (the top one), which appear to be truly remarkable - it has been formed at 23,000 feet.
![IMG_0882.JPG IMG_0882.JPG](https://www.metabunk.org/attachments/img_0882-jpg.12379/)
It was left by this plane:
![IMG_0881.JPG IMG_0881.JPG](https://www.metabunk.org/attachments/img_0881-jpg.12380/)
Here is an FR24 screenshot with the identification of the plane and its altitude:
![Screen shot 2015-04-20 at 19.51.37.png Screen shot 2015-04-20 at 19.51.37.png](https://www.metabunk.org/attachments/screen-shot-2015-04-20-at-19-51-37-png.12386/)
I think the formation of this trail at lower than typical contrail altitudes was possible because this is a turboprop plane, which engines produce a much cooler exhaust than the jet's turbofan engines:
![](https://www.metabunk.org/data/MetaMirrorCache/fdfb533119196ad326b27378936f0f49.jpg)
It was left by this plane:
Here is an FR24 screenshot with the identification of the plane and its altitude:
I think the formation of this trail at lower than typical contrail altitudes was possible because this is a turboprop plane, which engines produce a much cooler exhaust than the jet's turbofan engines:
![](https://www.metabunk.org/data/MetaMirrorCache/fdfb533119196ad326b27378936f0f49.jpg)
Last edited: