What noise is this?

[cqprime]

Does anyone knows what noise this is?

http://www.youtube.com/watch?v=KiMrnU-3ZQk

http://youtu.be/wtFYzDyM0Kc

I am staying along hougang ave 3 and omg this noise seems to be coming from Kim Chuan area.

[Astronotus oscellatus]

Does anyone knows what noise this is?

http://www.youtube.com/watch?v=KiMrnU-3ZQk

http://youtu.be/wtFYzDyM0Kc

I am staying along hougang ave 3 and omg this noise seems to be coming from Kim Chuan area.
Airplane engine test.

[cqprime]

thanks for info


Airplane engine test.