The main question is; measured at which distance? The closer you are, the higher is the level. The sound pressure level decreases with distance after the inverse distance law (1/r law), that means decreasing 6 dB per doubling distance r. Scroll down to related links and look at "Level in decibel - Sound pressure and the inverse distance law".
A commercial jet flight is a chartered airline service on a jet plane, as in a flight with passengers etc.
140 db - According to http://www.geocities.com/rf-man/db.html
the flight of the first jet airplane was in Germany
This could be called a flight fright, a jet fret, or a plane pain.
A jet plane is any aircraft powered by jet engines.
Only a 20 minute flight in any Jet, and usually a 45 minute flight in any propeller plane.
A jet
Leaving On A Jet Plane - John Denver
Leaving on a Jet Plane was created in 1967.
It is false that a plane flying against a jet stream will travel faster than a plane traveling with a jet stream.
The force of the jet engine propels a jet plane. The force of the engine pushes the exhaust gasses backward at great speed and the plane moves forward. This force propels the jet plane.
The flight number refers to the route, in this case its London to Boston return, on 29th July 2009 this flight/route was in a Boeing 747-400 Passenger Jet.